indefinite-integration

Question: $\int_{{}}^{{}}{\frac{x+\sin x}{1+\cos x}\ dx}$ is equal to



1) –$x\tan \frac{x}{2}+c$
2) $x\tan \ \frac{x}{2}+c$
3) $x\tan x+c$
4) $\frac{1}{2}x\tan x+c$
Solution: Explanation: No Explanation
Integration by parts

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