How do I solve this?

4) 3) (Ex. 6.2.6 5pm) Let T(u,v) = (u, v(1+u)) and let D' be the rectangle [0, 1] x [1, 2]. Find D := T(D') and perform the integration ffbtz mmy. b) (Ex 6.2.16 411%) Let D be the unit disk. Express f [D (1 + 1:2 + y2)3/'zdy as an integral over [0,1] x [0,211'] and evaluate