hitunglah hasil integral tentu fungsi trigonometri berikut mohon di bantu ya...

Hasil integrralnya aja ya...
Batas2nya coba masukin sendiri :)

b.
∫cos (x - π/2) dx = sin (x - π/2)

c.
∫sin² x dx
= ∫(1/2 - 1/2 cos 2x) dx
= 1/2 x - 1/4 sin 2x

d.
∫sin (2x - π/2) cos (2x - π/2) dx
= (1/2) sin² (2x - π/2)