ada yang tau cara no. 31 sama 33? thank youu

31) y = cos³(3 - 2x)
y' = 3 cos²(3-2x) * sin(3-2x) * -2
= -6 cos²(3-2x) sin(3 - 2x)
(C)

33) y = 2x sinx
u = sinx
u' = cosx
v = 2x
v' = 2
u'v + uv'
= cosx * 2x + sinx *2
= 2x cosx + 2sinx
(A)

semoga membantu :)