https://build-line.com 2026-10-29T04:49:02.134Z weekly 1 https://build-line.com/courses 2026-10-29T04:49:02.134Z weekly 0.9 https://build-line.com/problems 2026-10-27T23:48:29.764Z monthly 0.9 https://build-line.com/about 2026-10-27T23:48:29.764Z monthly 0.6 https://build-line.com/contact 2026-10-27T23:48:29.764Z monthly 0.6 https://build-line.com/privacy 2026-10-27T23:48:29.764Z monthly 0.6 https://build-line.com/courses/calculus-1 2026-10-27T23:48:29.764Z weekly 0.9 https://build-line.com/courses/calculus-2 2026-10-27T23:48:29.764Z weekly 0.9 https://build-line.com/courses/elementary-math 2026-10-29T04:49:02.134Z weekly 0.9 https://build-line.com/courses/middle-math 2026-10-27T23:48:29.764Z weekly 0.9 https://build-line.com/courses/common-math-1 2026-10-27T23:48:29.764Z weekly 0.9 https://build-line.com/courses/common-math-2 2026-10-27T23:48:29.764Z weekly 0.9 https://build-line.com/courses/algebra 2026-10-27T23:48:29.764Z weekly 0.9 https://build-line.com/courses/calculus-1/limit-of-function 미적분Ⅰ 1강 함수의 극한 https://build-line.com/edu-video/calculus-1/limit-of-function/poster.jpg?v=ba85d41f51d4 x가 a에 한없이 가까워질 때 f(x)가 다가가는 값을 읽는 법 https://build-line.com/edu-video/calculus-1/limit-of-function/video.mp4?v=ba85d41f51d4 289 2026-10-23T01:09:24.107Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-1/limit-laws 미적분Ⅰ 2강 극한의 성질과 계산 https://build-line.com/edu-video/calculus-1/limit-laws/poster.jpg?v=44d0a2371f8d 극한의 사칙연산과 0/0 꼴을 정리하는 방법 https://build-line.com/edu-video/calculus-1/limit-laws/video.mp4?v=44d0a2371f8d 325 2026-10-24T11:45:32.428Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-1/limits-at-infinity 미적분Ⅰ 3강 무한대에서의 극한 https://build-line.com/edu-video/calculus-1/limits-at-infinity/poster.jpg?v=063630d927a7 x가 한없이 커질 때의 극한과 ∞/∞, ∞−∞ 꼴 https://build-line.com/edu-video/calculus-1/limits-at-infinity/video.mp4?v=063630d927a7 346 2026-10-24T12:04:51.808Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-1/continuity 미적분Ⅰ 4강 함수의 연속 https://build-line.com/edu-video/calculus-1/continuity/poster.jpg?v=f4f59b3305d7 연속의 세 가지 조건과 연속함수 https://build-line.com/edu-video/calculus-1/continuity/video.mp4?v=f4f59b3305d7 332 2026-10-24T12:24:09.809Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-1/continuous-properties 미적분Ⅰ 5강 연속함수의 성질 https://build-line.com/edu-video/calculus-1/continuous-properties/poster.jpg?v=1a5cf0ace04c 최대·최소 정리와 사잇값 정리 https://build-line.com/edu-video/calculus-1/continuous-properties/video.mp4?v=1a5cf0ace04c 341 2026-10-24T10:48:15.467Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-1/derivative-at-point 미적분Ⅰ 6강 미분계수 https://build-line.com/edu-video/calculus-1/derivative-at-point/poster.jpg?v=7b6143b43ba7 순간변화율과 접선의 기울기 https://build-line.com/edu-video/calculus-1/derivative-at-point/video.mp4?v=7b6143b43ba7 332 2026-10-24T12:43:32.494Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-1/derivative-rules 미적분Ⅰ 7강 도함수와 미분법 https://build-line.com/edu-video/calculus-1/derivative-rules/poster.jpg?v=2ccf55392a34 다항함수를 빠르게 미분하는 규칙 https://build-line.com/edu-video/calculus-1/derivative-rules/video.mp4?v=2ccf55392a34 369 2026-10-23T09:40:04.617Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-1/tangent-line 미적분Ⅰ 8강 접선의 방정식 https://build-line.com/edu-video/calculus-1/tangent-line/poster.jpg?v=fdd70d3271b3 접점·기울기·지나는 점이 주어질 때의 접선 https://build-line.com/edu-video/calculus-1/tangent-line/video.mp4?v=fdd70d3271b3 328 2026-10-24T09:26:52.948Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-1/mean-value 미적분Ⅰ 9강 평균값 정리 https://build-line.com/edu-video/calculus-1/mean-value/poster.jpg?v=2e7c4c42736b 롤의 정리와 평균값 정리 https://build-line.com/edu-video/calculus-1/mean-value/video.mp4?v=2e7c4c42736b 321 2026-10-24T09:43:35.435Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-1/increase-decrease 미적분Ⅰ 10강 함수의 증가·감소와 극값 https://build-line.com/edu-video/calculus-1/increase-decrease/poster.jpg?v=80bb2c2fb085 도함수의 부호로 증감과 극대·극소 찾기 https://build-line.com/edu-video/calculus-1/increase-decrease/video.mp4?v=80bb2c2fb085 361 2026-10-24T03:06:24.145Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-1/graph-max-min 미적분Ⅰ 11강 함수의 그래프와 최대·최소 https://build-line.com/edu-video/calculus-1/graph-max-min/poster.jpg?v=915629c24dd7 증감표로 그래프를 그리고 최댓값·최솟값 찾기 https://build-line.com/edu-video/calculus-1/graph-max-min/video.mp4?v=915629c24dd7 323 2026-10-24T11:08:18.386Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-1/equations-inequalities 미적분Ⅰ 12강 방정식과 부등식에의 활용 https://build-line.com/edu-video/calculus-1/equations-inequalities/poster.jpg?v=3fa74632e3dc 그래프로 실근의 개수를 세고 부등식을 증명하기 https://build-line.com/edu-video/calculus-1/equations-inequalities/video.mp4?v=3fa74632e3dc 353 2026-10-23T13:38:06.240Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-1/velocity-acceleration 미적분Ⅰ 13강 속도와 가속도 https://build-line.com/edu-video/calculus-1/velocity-acceleration/poster.jpg?v=481d9cf10c15 위치를 미분해 속도와 가속도 구하기 https://build-line.com/edu-video/calculus-1/velocity-acceleration/video.mp4?v=481d9cf10c15 323 2026-10-23T12:41:29.525Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-1/antiderivative 미적분Ⅰ 14강 부정적분 https://build-line.com/edu-video/calculus-1/antiderivative/poster.jpg?v=aa0e1f54aac2 미분의 거꾸로 — 원시함수와 적분상수 https://build-line.com/edu-video/calculus-1/antiderivative/video.mp4?v=aa0e1f54aac2 351 2026-10-23T14:01:59.222Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-1/definite-integral 미적분Ⅰ 15강 정적분의 뜻 https://build-line.com/edu-video/calculus-1/definite-integral/poster.jpg?v=faf43b81ce73 넓이를 잘게 나눠 더한 값의 극한 https://build-line.com/edu-video/calculus-1/definite-integral/video.mp4?v=faf43b81ce73 374 2026-10-23T14:30:30.702Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-1/fundamental-theorem 미적분Ⅰ 16강 미적분의 기본정리 https://build-line.com/edu-video/calculus-1/fundamental-theorem/poster.jpg?v=924fd15053a9 미분과 적분은 서로 거꾸로 된 연산 https://build-line.com/edu-video/calculus-1/fundamental-theorem/video.mp4?v=924fd15053a9 346 2026-10-23T14:55:28.958Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-1/area 미적분Ⅰ 17강 정적분과 넓이 https://build-line.com/edu-video/calculus-1/area/poster.jpg?v=8565c3d73689 곡선과 x축, 두 곡선 사이의 넓이 https://build-line.com/edu-video/calculus-1/area/video.mp4?v=8565c3d73689 354 2026-10-24T09:07:56.165Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-1/velocity-distance 미적분Ⅰ 18강 속도와 거리 https://build-line.com/edu-video/calculus-1/velocity-distance/poster.jpg?v=acee20375d19 속도를 적분해 위치 변화와 움직인 거리 구하기 https://build-line.com/edu-video/calculus-1/velocity-distance/video.mp4?v=acee20375d19 365 2026-10-24T10:30:53.293Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-2/sequence-limit 미적분Ⅱ 1강 수열의 수렴과 발산 https://build-line.com/edu-video/calculus-2/sequence-limit/poster.jpg?v=663e05d5674a n이 한없이 커질 때 수열이 다가가는 값 https://build-line.com/edu-video/calculus-2/sequence-limit/video.mp4?v=663e05d5674a 363 2026-10-24T10:04:49.308Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-2/geometric-sequence-limit 미적분Ⅱ 2강 등비수열의 극한 https://build-line.com/edu-video/calculus-2/geometric-sequence-limit/poster.jpg?v=947e4dfdff73 공비 r에 따라 갈리는 rⁿ의 극한 https://build-line.com/edu-video/calculus-2/geometric-sequence-limit/video.mp4?v=947e4dfdff73 327 2026-10-24T04:04:57.019Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-2/series 미적분Ⅱ 3강 급수 https://build-line.com/edu-video/calculus-2/series/poster.jpg?v=60a1d62aff5e 부분합의 극한으로 정의되는 무한 개의 합 https://build-line.com/edu-video/calculus-2/series/video.mp4?v=60a1d62aff5e 332 2026-10-24T04:04:57.117Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-2/geometric-series 미적분Ⅱ 4강 등비급수 https://build-line.com/edu-video/calculus-2/geometric-series/poster.jpg?v=5c633c006137 공비의 크기로 수렴을 판정하고 합 구하기 https://build-line.com/edu-video/calculus-2/geometric-series/video.mp4?v=5c633c006137 349 2026-10-24T04:24:20.457Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-2/exp-log-derivative 미적분Ⅱ 5강 지수·로그함수의 미분 https://build-line.com/edu-video/calculus-2/exp-log-derivative/poster.jpg?v=5deced4206cf e의 정의와 지수·로그함수의 도함수 https://build-line.com/edu-video/calculus-2/exp-log-derivative/video.mp4?v=5deced4206cf 348 2026-10-24T04:48:22.652Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-2/trig-limits 미적분Ⅱ 6강 삼각함수의 덧셈정리와 극한 https://build-line.com/edu-video/calculus-2/trig-limits/poster.jpg?v=1632db2ca1b3 덧셈정리와 sin x / x의 극한 https://build-line.com/edu-video/calculus-2/trig-limits/video.mp4?v=1632db2ca1b3 349 2026-10-24T11:26:31.805Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-2/trig-derivative 미적분Ⅱ 7강 삼각함수의 미분 https://build-line.com/edu-video/calculus-2/trig-derivative/poster.jpg?v=9bb9cef85af2 여섯 가지 삼각함수의 도함수 https://build-line.com/edu-video/calculus-2/trig-derivative/video.mp4?v=9bb9cef85af2 348 2026-10-24T05:32:27.181Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-2/quotient-chain 미적분Ⅱ 8강 몫의 미분법과 합성함수의 미분법 https://build-line.com/edu-video/calculus-2/quotient-chain/poster.jpg?v=e397c7c74145 분수꼴 함수와 겹친 함수 미분하기 https://build-line.com/edu-video/calculus-2/quotient-chain/video.mp4?v=e397c7c74145 355 2026-10-24T05:55:22.009Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-2/param-implicit-inverse 미적분Ⅱ 9강 매개변수·음함수·역함수의 미분법 https://build-line.com/edu-video/calculus-2/param-implicit-inverse/poster.jpg?v=a11dfdbd2761 y가 x로 바로 풀리지 않을 때의 미분 https://build-line.com/edu-video/calculus-2/param-implicit-inverse/video.mp4?v=a11dfdbd2761 340 2026-10-24T06:13:50.522Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-2/second-derivative 미적분Ⅱ 10강 이계도함수와 그래프의 오목·볼록 https://build-line.com/edu-video/calculus-2/second-derivative/poster.jpg?v=e1c1527cd2f9 f″으로 볼록과 변곡점 판정하기 https://build-line.com/edu-video/calculus-2/second-derivative/video.mp4?v=e1c1527cd2f9 342 2026-10-24T06:32:59.502Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-2/derivative-applications 미적분Ⅱ 11강 도함수의 활용 https://build-line.com/edu-video/calculus-2/derivative-applications/poster.jpg?v=a019c6d53b2f 초월함수로 넓힌 접선·극값·운동 문제 https://build-line.com/edu-video/calculus-2/derivative-applications/video.mp4?v=a019c6d53b2f 353 2026-10-24T06:56:18.780Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-2/transcendental-integral 미적분Ⅱ 12강 여러 가지 함수의 적분 https://build-line.com/edu-video/calculus-2/transcendental-integral/poster.jpg?v=ee0238f556df 지수·로그·삼각함수의 부정적분 https://build-line.com/edu-video/calculus-2/transcendental-integral/video.mp4?v=ee0238f556df 339 2026-10-24T07:15:20.406Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-2/substitution 미적분Ⅱ 13강 치환적분법 https://build-line.com/edu-video/calculus-2/substitution/poster.jpg?v=5f9357642027 속함수를 새 변수로 바꿔 적분하기 https://build-line.com/edu-video/calculus-2/substitution/video.mp4?v=5f9357642027 313 2026-10-24T07:33:33.137Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-2/by-parts 미적분Ⅱ 14강 부분적분법 https://build-line.com/edu-video/calculus-2/by-parts/poster.jpg?v=9e38dbbe32ba 곱의 미분을 거꾸로 쓰는 적분 https://build-line.com/edu-video/calculus-2/by-parts/video.mp4?v=9e38dbbe32ba 338 2026-10-24T07:51:50.689Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-2/riemann-sum 미적분Ⅱ 15강 정적분과 급수의 합 https://build-line.com/edu-video/calculus-2/riemann-sum/poster.jpg?v=8054eb7cf6b8 급수의 극한을 정적분으로 바꾸기(구분구적법) https://build-line.com/edu-video/calculus-2/riemann-sum/video.mp4?v=8054eb7cf6b8 313 2026-10-24T08:09:10.125Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-2/area-volume 미적분Ⅱ 16강 넓이와 부피 https://build-line.com/edu-video/calculus-2/area-volume/poster.jpg?v=6164fe2ac902 단면의 넓이를 적분해 부피 구하기 https://build-line.com/edu-video/calculus-2/area-volume/video.mp4?v=6164fe2ac902 326 2026-10-24T08:28:40.020Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/calculus-2/distance-arclength 미적분Ⅱ 17강 속도와 거리, 곡선의 길이 https://build-line.com/edu-video/calculus-2/distance-arclength/poster.jpg?v=9bf10979db72 평면 운동의 거리와 곡선의 길이 https://build-line.com/edu-video/calculus-2/distance-arclength/video.mp4?v=9bf10979db72 355 2026-10-24T08:48:02.429Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/elementary-math/compose-decompose 초등 수학 1강 모으기와 가르기 https://build-line.com/edu-video/elementary-math/compose-decompose/poster.jpg?v=d23754d76c01 9까지의 수를 모으고 가르는 방법 https://build-line.com/edu-video/elementary-math/compose-decompose/video.mp4?v=d23754d76c01 185 2026-10-29T04:49:01.484Z yes no 2026-10-29T04:49:01.484Z weekly 0.8 https://build-line.com/courses/elementary-math/add-single 초등 수학 2강 한 자리 수의 덧셈 https://build-line.com/edu-video/elementary-math/add-single/poster.jpg?v=f00e249613d7 합이 9 이하인 덧셈, 이어 세기와 모아 세기 https://build-line.com/edu-video/elementary-math/add-single/video.mp4?v=f00e249613d7 205 2026-10-29T04:49:01.566Z yes no 2026-10-29T04:49:01.566Z weekly 0.8 https://build-line.com/courses/elementary-math/sub-single 초등 수학 3강 한 자리 수의 뺄셈 https://build-line.com/edu-video/elementary-math/sub-single/poster.jpg?v=13c48a1a501f 덜어 내기와 비교하기, 9 이하의 뺄셈 https://build-line.com/edu-video/elementary-math/sub-single/video.mp4?v=13c48a1a501f 229 2026-10-29T04:49:01.648Z yes no 2026-10-29T04:49:01.648Z weekly 0.8 https://build-line.com/courses/elementary-math/make-ten 초등 수학 4강 10을 만들어 더하기 https://build-line.com/edu-video/elementary-math/make-ten/poster.jpg?v=aaeb15e2b067 합이 10보다 큰 한 자리 수의 덧셈, 받아올림 https://build-line.com/edu-video/elementary-math/make-ten/video.mp4?v=aaeb15e2b067 224 2026-10-29T04:49:01.730Z yes no 2026-10-29T04:49:01.730Z weekly 0.8 https://build-line.com/courses/elementary-math/sub-ten 초등 수학 5강 10을 이용한 뺄셈 https://build-line.com/edu-video/elementary-math/sub-ten/poster.jpg?v=31a2ea6e69de 십몇에서 한 자리 수를 빼기, 받아내림 https://build-line.com/edu-video/elementary-math/sub-ten/video.mp4?v=31a2ea6e69de 205 2026-10-29T04:49:01.812Z yes no 2026-10-29T04:49:01.812Z weekly 0.8 https://build-line.com/courses/elementary-math/add-two-digit 초등 수학 6강 두 자리 수의 덧셈 https://build-line.com/edu-video/elementary-math/add-two-digit/poster.jpg?v=4c76d6b6143a 받아올림이 있는 두 자리 수의 세로셈 https://build-line.com/edu-video/elementary-math/add-two-digit/video.mp4?v=4c76d6b6143a 213 2026-10-29T04:49:01.893Z yes no 2026-10-29T04:49:01.893Z weekly 0.8 https://build-line.com/courses/elementary-math/sub-two-digit 초등 수학 7강 두 자리 수의 뺄셈 https://build-line.com/edu-video/elementary-math/sub-two-digit/poster.jpg?v=ec5927259b26 받아내림이 있는 두 자리 수의 세로셈 https://build-line.com/edu-video/elementary-math/sub-two-digit/video.mp4?v=ec5927259b26 206 2026-10-29T04:49:01.972Z yes no 2026-10-29T04:49:01.972Z weekly 0.8 https://build-line.com/courses/elementary-math/add-sub-relation 초등 수학 8강 덧셈과 뺄셈의 관계 https://build-line.com/edu-video/elementary-math/add-sub-relation/poster.jpg?v=d779727d9a5b 덧셈식과 뺄셈식 바꾸기, □ 구하기 https://build-line.com/edu-video/elementary-math/add-sub-relation/video.mp4?v=d779727d9a5b 247 2026-10-29T04:49:02.053Z yes no 2026-10-29T04:49:02.053Z weekly 0.8 https://build-line.com/courses/elementary-math/three-digit 초등 수학 9강 세 자리 수의 덧셈과 뺄셈 https://build-line.com/edu-video/elementary-math/three-digit/poster.jpg?v=bd66154cf819 받아올림과 받아내림이 있는 세 자리 수의 계산 https://build-line.com/edu-video/elementary-math/three-digit/video.mp4?v=bd66154cf819 249 2026-10-29T04:49:02.134Z yes no 2026-10-29T04:49:02.134Z weekly 0.8 https://build-line.com/courses/middle-math/integers-rationals 중학 수학 1강 정수와 유리수 https://build-line.com/edu-video/middle-math/integers-rationals/poster.jpg?v=fc562db21107 양수·음수와 수직선, 절댓값, 유리수의 사칙계산 https://build-line.com/edu-video/middle-math/integers-rationals/video.mp4?v=fc562db21107 247 2026-10-24T12:57:20.659Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/middle-math/prime-factorization 중학 수학 2강 소인수분해 https://build-line.com/edu-video/middle-math/prime-factorization/poster.jpg?v=fc0b6f5c1c22 소수와 합성수, 최대공약수와 최소공배수 https://build-line.com/edu-video/middle-math/prime-factorization/video.mp4?v=fc0b6f5c1c22 293 2026-10-24T13:12:27.327Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/middle-math/rational-decimals 중학 수학 3강 유한소수와 순환소수 https://build-line.com/edu-video/middle-math/rational-decimals/poster.jpg?v=2c4ef8d38f06 유한소수가 되는 조건, 순환소수를 분수로 나타내기 https://build-line.com/edu-video/middle-math/rational-decimals/video.mp4?v=2c4ef8d38f06 256 2026-10-24T13:26:47.368Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/middle-math/exponent-laws 중학 수학 4강 지수법칙 https://build-line.com/edu-video/middle-math/exponent-laws/poster.jpg?v=787dd5a9b1a5 거듭제곱의 곱셈·나눗셈과 거듭제곱의 거듭제곱 https://build-line.com/edu-video/middle-math/exponent-laws/video.mp4?v=787dd5a9b1a5 270 2026-10-24T13:42:19.322Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/middle-math/sqrt-real 중학 수학 5강 제곱근과 실수 https://build-line.com/edu-video/middle-math/sqrt-real/poster.jpg?v=866abdc27935 제곱근의 뜻과 성질, 무리수와 실수의 대소 https://build-line.com/edu-video/middle-math/sqrt-real/video.mp4?v=866abdc27935 244 2026-10-24T13:59:58.536Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/middle-math/sqrt-calc 중학 수학 6강 근호를 포함한 식의 계산 https://build-line.com/edu-video/middle-math/sqrt-calc/poster.jpg?v=e2988d75318e 제곱근의 곱셈·나눗셈, 분모의 유리화, 덧셈·뺄셈 https://build-line.com/edu-video/middle-math/sqrt-calc/video.mp4?v=e2988d75318e 226 2026-10-24T14:18:40.578Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/middle-math/literal-expr 중학 수학 7강 문자의 사용과 식의 계산 https://build-line.com/edu-video/middle-math/literal-expr/poster.jpg?v=acbfce100dda 문자로 식 세우기, 식의 값, 일차식의 덧셈·뺄셈 https://build-line.com/edu-video/middle-math/literal-expr/video.mp4?v=acbfce100dda 236 2026-10-24T14:29:02.377Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/middle-math/polynomial-ops 중학 수학 8강 단항식과 다항식의 계산 https://build-line.com/edu-video/middle-math/polynomial-ops/poster.jpg?v=7eaf29242f96 단항식의 곱셈·나눗셈과 다항식의 사칙계산 https://build-line.com/edu-video/middle-math/polynomial-ops/video.mp4?v=7eaf29242f96 248 2026-10-24T14:44:01.681Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/middle-math/multiplication-formula 중학 수학 9강 곱셈 공식 https://build-line.com/edu-video/middle-math/multiplication-formula/poster.jpg?v=d61a05bfa1cb 전개 공식과 수의 계산에의 활용 https://build-line.com/edu-video/middle-math/multiplication-formula/video.mp4?v=d61a05bfa1cb 257 2026-10-24T14:57:02.439Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/middle-math/factorization 중학 수학 10강 인수분해 https://build-line.com/edu-video/middle-math/factorization/poster.jpg?v=bab738d4898a 공통인수와 인수분해 공식 https://build-line.com/edu-video/middle-math/factorization/video.mp4?v=bab738d4898a 268 2026-10-24T15:13:40.728Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/middle-math/linear-eq 중학 수학 11강 일차방정식 https://build-line.com/edu-video/middle-math/linear-eq/poster.jpg?v=40c0717798c9 등식의 성질로 풀고 문장으로 된 문제에 활용 https://build-line.com/edu-video/middle-math/linear-eq/video.mp4?v=40c0717798c9 334 2026-10-24T15:31:40.870Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/middle-math/linear-ineq 중학 수학 12강 일차부등식 https://build-line.com/edu-video/middle-math/linear-ineq/poster.jpg?v=d580038d7e4d 부등식의 성질, 일차부등식의 풀이와 활용 https://build-line.com/edu-video/middle-math/linear-ineq/video.mp4?v=d580038d7e4d 273 2026-10-24T15:46:11.397Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/middle-math/simultaneous-eq 중학 수학 13강 연립일차방정식 https://build-line.com/edu-video/middle-math/simultaneous-eq/poster.jpg?v=d3c3410a2731 가감법·대입법과 활용 https://build-line.com/edu-video/middle-math/simultaneous-eq/video.mp4?v=d3c3410a2731 302 2026-10-24T17:39:42.011Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/middle-math/quadratic-eq 중학 수학 14강 이차방정식 https://build-line.com/edu-video/middle-math/quadratic-eq/poster.jpg?v=ab0a4002044b 인수분해·완전제곱식·근의 공식 https://build-line.com/edu-video/middle-math/quadratic-eq/video.mp4?v=ab0a4002044b 311 2026-10-24T16:21:48.829Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/middle-math/coordinate-function 중학 수학 15강 좌표평면과 함수 https://build-line.com/edu-video/middle-math/coordinate-function/poster.jpg?v=30d953b8de31 순서쌍과 좌표평면, 함수의 뜻과 함숫값, 정비례·반비례 https://build-line.com/edu-video/middle-math/coordinate-function/video.mp4?v=30d953b8de31 277 2026-10-24T16:37:11.305Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/middle-math/linear-function 중학 수학 16강 일차함수와 그래프 https://build-line.com/edu-video/middle-math/linear-function/poster.jpg?v=89d5b2304bfd 기울기·절편과 일차함수의 식 구하기 https://build-line.com/edu-video/middle-math/linear-function/video.mp4?v=89d5b2304bfd 265 2026-10-24T16:53:15.925Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/middle-math/linear-function-eq 중학 수학 17강 일차함수와 일차방정식 https://build-line.com/edu-video/middle-math/linear-function-eq/poster.jpg?v=001a9c25ff5c 일차방정식의 그래프, 연립방정식의 해와 교점 https://build-line.com/edu-video/middle-math/linear-function-eq/video.mp4?v=001a9c25ff5c 265 2026-10-24T17:09:08.470Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/middle-math/quadratic-function 중학 수학 18강 이차함수와 그래프 https://build-line.com/edu-video/middle-math/quadratic-function/poster.jpg?v=3d4e5836199b 꼭짓점·축·평행이동과 표준형 https://build-line.com/edu-video/middle-math/quadratic-function/video.mp4?v=3d4e5836199b 286 2026-10-24T17:31:07.442Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/middle-math/basic-figures 중학 수학 19강 기본 도형과 작도 https://build-line.com/edu-video/middle-math/basic-figures/poster.jpg?v=632521ebf4b0 맞꼭지각, 평행선의 성질, 작도와 삼각형의 결정 https://build-line.com/edu-video/middle-math/basic-figures/video.mp4?v=632521ebf4b0 289 2026-10-26T22:04:02.691Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/middle-math/polygon-angles 중학 수학 20강 삼각형과 다각형의 성질 https://build-line.com/edu-video/middle-math/polygon-angles/poster.jpg?v=0d38ea1ebbdd 삼각형의 합동, 내각·외각, 이등변삼각형과 사각형 https://build-line.com/edu-video/middle-math/polygon-angles/video.mp4?v=0d38ea1ebbdd 303 2026-10-26T22:04:02.791Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/middle-math/circle-solids 중학 수학 21강 원과 입체도형 https://build-line.com/edu-video/middle-math/circle-solids/poster.jpg?v=e04dfdfa0486 원·부채꼴, 기둥·뿔·구의 겉넓이와 부피 https://build-line.com/edu-video/middle-math/circle-solids/video.mp4?v=e04dfdfa0486 298 2026-10-26T22:04:02.888Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/middle-math/similarity 중학 수학 22강 도형의 닮음 https://build-line.com/edu-video/middle-math/similarity/poster.jpg?v=a1fa9d56a62a 닮음 조건, 닮음비와 넓이·부피의 비, 평행선과 선분의 비 https://build-line.com/edu-video/middle-math/similarity/video.mp4?v=a1fa9d56a62a 320 2026-10-27T00:37:38.315Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/middle-math/pythagoras 중학 수학 23강 피타고라스 정리 https://build-line.com/edu-video/middle-math/pythagoras/poster.jpg?v=2e3483cd9eb8 직각삼각형의 세 변 사이의 관계와 활용 https://build-line.com/edu-video/middle-math/pythagoras/video.mp4?v=2e3483cd9eb8 283 2026-10-27T23:47:50.322Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/middle-math/trig-ratio 중학 수학 24강 삼각비 https://build-line.com/edu-video/middle-math/trig-ratio/poster.jpg?v=6e61090a4f0d 사인·코사인·탄젠트와 특수각의 삼각비 https://build-line.com/edu-video/middle-math/trig-ratio/video.mp4?v=6e61090a4f0d 309 2026-10-27T23:47:50.415Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/middle-math/circle-properties 중학 수학 25강 원의 성질 https://build-line.com/edu-video/middle-math/circle-properties/poster.jpg?v=b00982e8429c 현·접선의 성질과 원주각 https://build-line.com/edu-video/middle-math/circle-properties/video.mp4?v=b00982e8429c 253 2026-10-26T21:13:35.729Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/middle-math/statistics 중학 수학 26강 자료의 정리와 분석 https://build-line.com/edu-video/middle-math/statistics/poster.jpg?v=a171cc637c42 대푯값과 산포도, 산점도와 상관관계 https://build-line.com/edu-video/middle-math/statistics/video.mp4?v=a171cc637c42 303 2026-10-26T21:13:35.840Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/middle-math/probability 중학 수학 27강 확률 https://build-line.com/edu-video/middle-math/probability/poster.jpg?v=028813d369b2 경우의 수와 확률의 기본 성질 https://build-line.com/edu-video/middle-math/probability/video.mp4?v=028813d369b2 280 2026-10-26T21:13:35.953Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/common-math-1/poly-ops 공통수학1 1강 다항식의 연산 https://build-line.com/edu-video/common-math-1/poly-ops/poster.jpg?v=0a23d5cedf44 다항식의 덧셈·곱셈과 곱셈 공식의 확장 https://build-line.com/edu-video/common-math-1/poly-ops/video.mp4?v=0a23d5cedf44 287 2026-10-27T02:12:07.601Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/common-math-1/poly-division 공통수학1 2강 나머지정리와 인수정리 https://build-line.com/edu-video/common-math-1/poly-division/poster.jpg?v=408c3dfd09f7 다항식의 나눗셈, 항등식, 나머지정리·인수정리, 조립제법 https://build-line.com/edu-video/common-math-1/poly-division/video.mp4?v=408c3dfd09f7 287 2026-10-27T02:12:07.689Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/common-math-1/poly-factoring 공통수학1 3강 인수분해 https://build-line.com/edu-video/common-math-1/poly-factoring/poster.jpg?v=10c472df588e 공식·치환·인수정리를 이용한 인수분해 https://build-line.com/edu-video/common-math-1/poly-factoring/video.mp4?v=10c472df588e 282 2026-10-27T02:12:07.775Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/common-math-1/complex-numbers 공통수학1 4강 복소수 https://build-line.com/edu-video/common-math-1/complex-numbers/poster.jpg?v=8a1e13c159a3 허수단위, 복소수의 사칙연산, 켤레복소수 https://build-line.com/edu-video/common-math-1/complex-numbers/video.mp4?v=8a1e13c159a3 299 2026-10-27T02:12:07.861Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/common-math-1/quadratic-roots 공통수학1 5강 이차방정식의 판별식과 근과 계수의 관계 https://build-line.com/edu-video/common-math-1/quadratic-roots/poster.jpg?v=50d3a78b55c3 판별식으로 근의 종류 판단, 근과 계수의 관계 https://build-line.com/edu-video/common-math-1/quadratic-roots/video.mp4?v=50d3a78b55c3 290 2026-10-27T03:15:54.872Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/common-math-1/quadratic-function-line 공통수학1 6강 이차방정식과 이차함수 https://build-line.com/edu-video/common-math-1/quadratic-function-line/poster.jpg?v=e913860db6b0 이차함수의 그래프와 x축·직선의 위치 관계 https://build-line.com/edu-video/common-math-1/quadratic-function-line/video.mp4?v=e913860db6b0 282 2026-10-27T03:15:54.964Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/common-math-1/quadratic-extrema 공통수학1 7강 이차함수의 최대·최소 https://build-line.com/edu-video/common-math-1/quadratic-extrema/poster.jpg?v=6e053ec15de2 제한된 범위에서 이차함수의 최댓값과 최솟값 https://build-line.com/edu-video/common-math-1/quadratic-extrema/video.mp4?v=6e053ec15de2 287 2026-10-27T23:47:50.508Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/common-math-1/higher-equations 공통수학1 8강 여러 가지 방정식 https://build-line.com/edu-video/common-math-1/higher-equations/poster.jpg?v=f58bf1ba262f 삼차·사차방정식과 연립이차방정식 https://build-line.com/edu-video/common-math-1/higher-equations/video.mp4?v=f58bf1ba262f 291 2026-10-27T03:15:55.148Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/common-math-1/inequalities 공통수학1 9강 여러 가지 부등식 https://build-line.com/edu-video/common-math-1/inequalities/poster.jpg?v=cf934395f92f 연립일차부등식, 절댓값 부등식, 이차부등식 https://build-line.com/edu-video/common-math-1/inequalities/video.mp4?v=cf934395f92f 284 2026-10-26T23:34:33.344Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/common-math-1/counting-rules 공통수학1 10강 합의 법칙과 곱의 법칙 https://build-line.com/edu-video/common-math-1/counting-rules/poster.jpg?v=837c04096a63 경우의 수를 세는 두 가지 기본 법칙 https://build-line.com/edu-video/common-math-1/counting-rules/video.mp4?v=837c04096a63 292 2026-10-26T23:34:33.448Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/common-math-1/permutation 공통수학1 11강 순열 https://build-line.com/edu-video/common-math-1/permutation/poster.jpg?v=6db4632397a3 서로 다른 것을 일렬로 나열하는 경우의 수 https://build-line.com/edu-video/common-math-1/permutation/video.mp4?v=6db4632397a3 283 2026-10-26T23:34:33.547Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/common-math-1/combination 공통수학1 12강 조합 https://build-line.com/edu-video/common-math-1/combination/poster.jpg?v=05afe61dd97d 서로 다른 것 중 순서 없이 택하는 경우의 수 https://build-line.com/edu-video/common-math-1/combination/video.mp4?v=05afe61dd97d 258 2026-10-27T00:15:44.589Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/common-math-1/matrix-concept 공통수학1 13강 행렬의 뜻 https://build-line.com/edu-video/common-math-1/matrix-concept/poster.jpg?v=d1f22993fd8b 행렬의 성분, 행과 열, 서로 같은 행렬 https://build-line.com/edu-video/common-math-1/matrix-concept/video.mp4?v=d1f22993fd8b 189 2026-10-27T00:15:44.738Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/common-math-1/matrix-ops 공통수학1 14강 행렬의 연산 https://build-line.com/edu-video/common-math-1/matrix-ops/poster.jpg?v=24bfd69e34d3 행렬의 덧셈·뺄셈·실수배와 곱셈 https://build-line.com/edu-video/common-math-1/matrix-ops/video.mp4?v=24bfd69e34d3 268 2026-10-27T00:15:44.846Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/common-math-2/plane-coordinates 공통수학2 1강 두 점 사이의 거리와 내분점 https://build-line.com/edu-video/common-math-2/plane-coordinates/poster.jpg?v=c6ab471c7f9f 좌표평면의 거리 공식, 내분점과 무게중심 https://build-line.com/edu-video/common-math-2/plane-coordinates/video.mp4?v=c6ab471c7f9f 296 2026-10-27T04:19:39.588Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/common-math-2/line-equation 공통수학2 2강 직선의 방정식 https://build-line.com/edu-video/common-math-2/line-equation/poster.jpg?v=5b8bfda04a47 기울기와 한 점, 두 점으로 직선 구하기, 평행·수직 조건 https://build-line.com/edu-video/common-math-2/line-equation/video.mp4?v=5b8bfda04a47 282 2026-10-27T04:19:39.686Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/common-math-2/point-line-distance 공통수학2 3강 점과 직선 사이의 거리 https://build-line.com/edu-video/common-math-2/point-line-distance/poster.jpg?v=424c7cbf531e 거리 공식과 넓이 구하기 https://build-line.com/edu-video/common-math-2/point-line-distance/video.mp4?v=424c7cbf531e 265 2026-10-27T04:19:39.788Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/common-math-2/circle-equation 공통수학2 4강 원의 방정식 https://build-line.com/edu-video/common-math-2/circle-equation/poster.jpg?v=19914edf1c11 중심과 반지름으로 원의 방정식 세우기, 일반형을 표준형으로 https://build-line.com/edu-video/common-math-2/circle-equation/video.mp4?v=19914edf1c11 289 2026-10-27T04:19:39.890Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/common-math-2/circle-line 공통수학2 5강 원과 직선의 위치 관계 https://build-line.com/edu-video/common-math-2/circle-line/poster.jpg?v=23d22e476317 교점의 개수, 접선의 방정식 https://build-line.com/edu-video/common-math-2/circle-line/video.mp4?v=23d22e476317 291 2026-10-27T23:47:50.599Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/common-math-2/translation-symmetry 공통수학2 6강 도형의 이동 https://build-line.com/edu-video/common-math-2/translation-symmetry/poster.jpg?v=c869a57a0814 점과 도형의 평행이동·대칭이동 https://build-line.com/edu-video/common-math-2/translation-symmetry/video.mp4?v=c869a57a0814 279 2026-10-27T23:47:50.686Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/common-math-2/sets 공통수학2 7강 집합의 뜻과 포함 관계 https://build-line.com/edu-video/common-math-2/sets/poster.jpg?v=db5be717478c 집합과 원소, 부분집합과 그 개수 https://build-line.com/edu-video/common-math-2/sets/video.mp4?v=db5be717478c 283 2026-10-27T23:47:50.772Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/common-math-2/set-ops 공통수학2 8강 집합의 연산 https://build-line.com/edu-video/common-math-2/set-ops/poster.jpg?v=ae0f1ccf8a9b 합집합·교집합·여집합·차집합과 연산 법칙 https://build-line.com/edu-video/common-math-2/set-ops/video.mp4?v=ae0f1ccf8a9b 320 2026-10-27T23:47:50.863Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/common-math-2/propositions 공통수학2 9강 명제와 조건 https://build-line.com/edu-video/common-math-2/propositions/poster.jpg?v=79a2813d1c2e 명제의 참·거짓, 진리집합, 역과 대우 https://build-line.com/edu-video/common-math-2/propositions/video.mp4?v=79a2813d1c2e 297 2026-10-27T23:47:50.953Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/common-math-2/sufficient-necessary 공통수학2 10강 충분조건과 필요조건 https://build-line.com/edu-video/common-math-2/sufficient-necessary/poster.jpg?v=828d06940830 두 조건 사이의 충분·필요·필요충분조건 https://build-line.com/edu-video/common-math-2/sufficient-necessary/video.mp4?v=828d06940830 274 2026-10-27T23:47:51.038Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/common-math-2/proof-ineq 공통수학2 11강 명제의 증명과 절대부등식 https://build-line.com/edu-video/common-math-2/proof-ineq/poster.jpg?v=b6e543451502 대우·귀류법을 이용한 증명, 산술평균과 기하평균 https://build-line.com/edu-video/common-math-2/proof-ineq/video.mp4?v=b6e543451502 274 2026-10-27T23:47:51.120Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/common-math-2/function-concept 공통수학2 12강 함수의 뜻 https://build-line.com/edu-video/common-math-2/function-concept/poster.jpg?v=77f2f1295d7d 대응으로서의 함수, 정의역·공역·치역, 일대일대응 https://build-line.com/edu-video/common-math-2/function-concept/video.mp4?v=77f2f1295d7d 298 2026-10-27T23:47:51.205Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/common-math-2/composite-inverse 공통수학2 13강 합성함수와 역함수 https://build-line.com/edu-video/common-math-2/composite-inverse/poster.jpg?v=897f8c220013 합성함수, 역함수 구하기와 그래프의 대칭 https://build-line.com/edu-video/common-math-2/composite-inverse/video.mp4?v=897f8c220013 289 2026-10-27T23:47:51.295Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/common-math-2/rational-function 공통수학2 14강 유리함수 https://build-line.com/edu-video/common-math-2/rational-function/poster.jpg?v=21f4c7b2cbfc 유리식의 계산, 유리함수의 그래프와 점근선 https://build-line.com/edu-video/common-math-2/rational-function/video.mp4?v=21f4c7b2cbfc 294 2026-10-27T23:47:51.392Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/common-math-2/irrational-function 공통수학2 15강 무리함수 https://build-line.com/edu-video/common-math-2/irrational-function/poster.jpg?v=e1a0c1161abd 무리식의 계산, 무리함수의 그래프 https://build-line.com/edu-video/common-math-2/irrational-function/video.mp4?v=e1a0c1161abd 287 2026-10-27T23:47:51.486Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/algebra/exp-roots 대수 1강 거듭제곱근과 지수의 확장 https://build-line.com/edu-video/algebra/exp-roots/poster.jpg?v=7b6321068c3f 거듭제곱근의 뜻, 정수·유리수·실수 지수 https://build-line.com/edu-video/algebra/exp-roots/video.mp4?v=7b6321068c3f 296 2026-10-27T23:47:48.748Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/algebra/log-def 대수 2강 로그의 뜻과 성질 https://build-line.com/edu-video/algebra/log-def/poster.jpg?v=669f30a59189 로그의 정의와 성질, 밑의 변환 https://build-line.com/edu-video/algebra/log-def/video.mp4?v=669f30a59189 272 2026-10-27T23:47:48.828Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/algebra/common-log 대수 3강 상용로그 https://build-line.com/edu-video/algebra/common-log/poster.jpg?v=cae9e102a6b6 밑이 10인 로그로 큰 수의 자릿수 구하기 https://build-line.com/edu-video/algebra/common-log/video.mp4?v=cae9e102a6b6 263 2026-10-27T23:47:48.905Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/algebra/exp-function 대수 4강 지수함수 https://build-line.com/edu-video/algebra/exp-function/poster.jpg?v=fbc78846bb35 지수함수의 그래프와 성질, 지수방정식·지수부등식 https://build-line.com/edu-video/algebra/exp-function/video.mp4?v=fbc78846bb35 266 2026-10-27T23:47:48.992Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/algebra/log-function 대수 5강 로그함수 https://build-line.com/edu-video/algebra/log-function/poster.jpg?v=770655e67ca2 로그함수의 그래프와 성질, 로그방정식·로그부등식 https://build-line.com/edu-video/algebra/log-function/video.mp4?v=770655e67ca2 288 2026-10-27T23:47:49.070Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/algebra/radian 대수 6강 일반각과 호도법 https://build-line.com/edu-video/algebra/radian/poster.jpg?v=39aab974e4b3 일반각, 라디안, 부채꼴의 호의 길이와 넓이 https://build-line.com/edu-video/algebra/radian/video.mp4?v=39aab974e4b3 271 2026-10-27T23:47:49.148Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/algebra/trig-def 대수 7강 삼각함수의 뜻과 관계 https://build-line.com/edu-video/algebra/trig-def/poster.jpg?v=907671f2448b 단위원으로 정의한 삼각함수, 부호와 관계식 https://build-line.com/edu-video/algebra/trig-def/video.mp4?v=907671f2448b 296 2026-10-27T23:47:49.228Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/algebra/trig-graph 대수 8강 삼각함수의 그래프 https://build-line.com/edu-video/algebra/trig-graph/poster.jpg?v=396857652b70 주기·최댓값·최솟값과 평행이동 https://build-line.com/edu-video/algebra/trig-graph/video.mp4?v=396857652b70 293 2026-10-27T23:47:49.309Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/algebra/trig-equation 대수 9강 삼각함수를 포함한 방정식과 부등식 https://build-line.com/edu-video/algebra/trig-equation/poster.jpg?v=33da02958ade 그래프와 단위원으로 삼각방정식·삼각부등식 풀기 https://build-line.com/edu-video/algebra/trig-equation/video.mp4?v=33da02958ade 283 2026-10-27T23:47:49.396Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/algebra/sine-cosine-law 대수 10강 사인법칙과 코사인법칙 https://build-line.com/edu-video/algebra/sine-cosine-law/poster.jpg?v=8bd089ae1f30 삼각형의 변과 각, 외접원의 반지름, 넓이 https://build-line.com/edu-video/algebra/sine-cosine-law/video.mp4?v=8bd089ae1f30 282 2026-10-27T23:47:49.482Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/algebra/sequence-basic 대수 11강 수열의 뜻 https://build-line.com/edu-video/algebra/sequence-basic/poster.jpg?v=2aa97bef634e 수열과 일반항, 합과 일반항의 관계 https://build-line.com/edu-video/algebra/sequence-basic/video.mp4?v=2aa97bef634e 285 2026-10-27T23:47:49.629Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/algebra/arithmetic-seq 대수 12강 등차수열 https://build-line.com/edu-video/algebra/arithmetic-seq/poster.jpg?v=815306cb9d55 등차수열의 일반항과 합, 등차중항 https://build-line.com/edu-video/algebra/arithmetic-seq/video.mp4?v=815306cb9d55 270 2026-10-27T23:47:49.750Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/algebra/geometric-seq 대수 13강 등비수열 https://build-line.com/edu-video/algebra/geometric-seq/poster.jpg?v=cfecdfcb471e 등비수열의 일반항과 합, 등비중항 https://build-line.com/edu-video/algebra/geometric-seq/video.mp4?v=cfecdfcb471e 279 2026-10-27T23:47:49.852Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/algebra/sigma 대수 14강 수열의 합과 시그마 https://build-line.com/edu-video/algebra/sigma/poster.jpg?v=c366f00c0cb9 합의 기호 Σ의 성질, 자연수의 거듭제곱의 합 https://build-line.com/edu-video/algebra/sigma/video.mp4?v=c366f00c0cb9 293 2026-10-27T23:47:49.944Z yes no 2026-10-27T23:48:29.764Z weekly 0.8 https://build-line.com/courses/algebra/special-sums 대수 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https://build-line.com/problems/mid-functions/mid-coordinate-function 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/mid-functions/mid-linear-function 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/mid-functions/mid-linear-function-eq 2026-10-23T01:04:08.787Z monthly 0.6 https://build-line.com/problems/mid-functions/mid-quadratic-function 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/mid-geometry/mid-basic-figures 2026-10-23T01:04:08.787Z monthly 0.6 https://build-line.com/problems/mid-geometry/mid-polygon-angles 2026-10-23T01:04:08.787Z monthly 0.6 https://build-line.com/problems/mid-geometry/mid-circle-solids 2026-10-23T01:11:46.819Z monthly 0.6 https://build-line.com/problems/mid-geometry/mid-similarity 2026-10-23T01:04:08.787Z monthly 0.6 https://build-line.com/problems/mid-geometry/mid-pythagoras 2026-10-23T01:04:08.787Z monthly 0.6 https://build-line.com/problems/mid-geometry/mid-trig-ratio 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/mid-data/mid-statistics 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/mid-data/mid-probability 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/c1-polynomial/c1-poly-ops 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/c1-polynomial/c1-poly-division 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/c1-polynomial/c1-poly-factoring 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/c1-equation/c1-complex-numbers 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/c1-equation/c1-quadratic-roots 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/c1-equation/c1-quadratic-function-line 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/c1-equation/c1-quadratic-extrema 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/c1-equation/c1-higher-equations 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/c1-equation/c1-inequalities 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/c1-counting/c1-counting-rules 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/c1-counting/c1-permutation 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/c1-counting/c1-combination 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/c1-matrix/c1-matrix-ops 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/c2-geometry-eq/c2-plane-coordinates 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/c2-geometry-eq/c2-line-equation 2026-10-23T01:11:46.819Z monthly 0.6 https://build-line.com/problems/c2-geometry-eq/c2-circle-equation 2026-10-23T01:11:46.819Z monthly 0.6 https://build-line.com/problems/c2-geometry-eq/c2-circle-line 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/c2-geometry-eq/c2-translation-symmetry 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/c2-set-logic/c2-sets 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/c2-set-logic/c2-set-ops 2026-10-23T05:51:00.512Z monthly 0.6 https://build-line.com/problems/c2-set-logic/c2-propositions 2026-10-23T05:51:00.512Z monthly 0.6 https://build-line.com/problems/c2-set-logic/c2-sufficient-necessary 2026-10-23T05:51:00.512Z monthly 0.6 https://build-line.com/problems/c2-set-logic/c2-proof-ineq 2026-10-23T05:51:00.512Z monthly 0.6 https://build-line.com/problems/c2-function-graph/c2-function-concept 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/c2-function-graph/c2-composite-inverse 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/c2-function-graph/c2-rational-function 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/c2-function-graph/c2-irrational-function 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/alg-exp-log/alg-exp-roots 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/alg-exp-log/alg-log-def 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/alg-exp-log/alg-common-log 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/alg-exp-log/alg-exp-function 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/alg-exp-log/alg-log-function 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/alg-trig/alg-radian 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/alg-trig/alg-trig-def 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/alg-trig/alg-trig-graph 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/alg-trig/alg-trig-equation 2026-10-24T13:53:23.621Z monthly 0.6 https://build-line.com/problems/alg-trig/alg-sine-cosine-law 2026-10-24T13:53:23.621Z monthly 0.6 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