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What is the best way?
What are you talking about?not cosine, sine
Try again later :)Don't know, I guess I'm too drunk to do maths right now.
So how about just u= cos(x)?Oh, I wrote cos^3 x instead of sin^3 x in the headline. That explains my confusion.
sin^3 x
=
sin^2 x*sin x
=
(1 - cos^2 x)sin x
Then substitution?
u = 1-cos^2 x
du/dx = 2cos x*sin*x
so that
sin^3 x dx = - u / 2cos x
Hm...