I have to evaluate the following integral by parts: ∫x+sinx1+cosxdx
So I tried to put:
u=x+sinx → du=(1+cosx)dx
dv=dx1+cos(x) → v=∫dx1+cosx
But there is an extra integral to do ( the v function) I evaluated it by sibstitution, and I get v=tanx2, Now
∫x+sin(x)1+cos(x)dx=(x+sinx)tanx2−x+C
My question: is it possible to evaluate this integral entirely by parts (without using any substitution) ?
I appreciate any ideas
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