Question

∫cosx/(1+sinx)

Answer 1

u=sin(x)+1
du = cos(x)

Answer 2

are u sure thats the answer??

Answer 3

int du/u = int (1/u)du = log|u|+c = log|sin+1|+c

Answer 4

that is correct

Answer 5

its a standard result int f'(x)/ f(x) = ln f(x) +C