Question

Ayo bro nilai nya besar!
nomer 2-4 aja.

Answer 1

2). int 2/cosec(1 - x) dx
= int 2 sin(1 - x) dx
misal u = 1 - x
du = - dx
= int -2 sin(u) du
= 2 cos(u) + c
= 2 cos(1 - x)

3). int cot(u) du
= int cos(u)/sin(u) du
misal t = sin(u)
dt = cos(u) du
= int 1/t dt
= ln(t) + c
= ln(sin(u)) + c