[T] Consider the function f(x,y)=sin(x2)cos(y2), where (x,y)∈R=[−1,1]×[−1,1].
a. Use the midpoint rule with m=n=2,4,…,10 to estimate the double integral I=∬Rsin(x2)cos(y2)dA. Round your answers to the nearest hundredths.
b. For m=n=2, find the average value of f over the region R. Round your answer to the nearest hundredths.
c. Use a CAS to graph in the same coordinate system the solid whose volume is given by ∬Rsin(x2)cos(y2)dA and the plane z=fave.