The value of

MATHEMATICS · Single correct · CBSE · Mathematics · Integrals · Integrals

Problem

The value of

\int_{-\pi}^{\pi}\frac{\cos^2 x}{1+a^x}\,dx

, where

a>0

, is (1)

\pi

(2)

a\pi

(3)

2\pi

(4)

\frac{\pi}{2}