집합의 뜻과 포함 관계 연습문제 — Sundstrom, Mathematical Reasoning · 2.3절 · 1a번

Sundstrom, Mathematical Reasoning · 2.3절 · 1a번영어 원문

Use the roster method to specify the elements in each of the following sets and then write a sentence in English describing the set.

$\left\{ x \in \mathbb{R} \mid 2x^2 + 3x - 2 = 0 \right\}$

정답·풀이 보기 (영어 원문)

The set of all real number solutions of the equation $2x^2 + 3x - 2 = 0$ , which is $\left\{ {\dfrac{1}{2}, - 2} \right\}$ .

한 번 더 — 비슷한 문제Sundstrom, Mathematical Reasoning · 2.3절 · 1f번영어 원문

Use the roster method to specify the elements in each of the following sets and then write a sentence in English describing the set.

$\left\{ {y \in \mathbb{Z}} \mid \left| {y - 2} \right| \leq 2.5 \right\}$

다 풀었으면 정답 확인

The set of all integers that are less than or equal to 2.5 units from 2 on the number line, which is $\{0, 1, 2, 3, 4\}$ .