Question

Integrate :-

Answer 1

@Fifciol

Answer 2

int cot^3 x dx= int (csc^2-1)cot dx
-int cot x dx - int cot x (-csc^2 x) dx
(for the second integral let u=cotx, du=-sec^2 x dx
-ln |sin x| -1/2 cot^2 x +C