How do I solve this?

2) a) (Ex. 5.4.2 4pts) Change the order of integration and evaluate sin(x2 )dady y b) (Ex. 5.4.3.c 5pts) In the following integral, change the order of integration, sketch the corresponding regions and evaluate the integral both ways y (r + y) dxdy.4) 8.) (Ex. 6.2.6 5pts) Let Thaw) = (u, v(1+u)) and let D' be the rectangle [0, l] x [1, 2]. Find D := T(D') and perform the integration [joke yMIdy- b) (Ex 6.2.16 4pm) Let D be the unit disk. Express / f\" (1 + 1:2 + y2)3/2dxdy as an integral over [0, 1] x [0,211] and evaluate