Evaluate the integral
from 0 to pi/2
∫ ln(sin x ) dx
"Data! Data! Data!" he cried impatiently. "I can't make bricks without clay."
I am really sorry to have deleted several posts here, I know you worked hard on you replies.
But unfortunately the argument got out of hand.
You may start again, but please think what it would be like to receive the replies you give.