Question

$\int\limits^\pi_{-\pi} \frac{2x(1+\sin x)}{1+\cos^{2}x} dx$ is
(a) $\frac{\pi^{2}}{4}$
(b) π²
(c) zero
(d) $\frac{\pi}{2}$

Answer 1

IT 'S A IS VLCORRECT ...........

Answer 2

A is the answer......