A solution of the equation is

MATHEMATICS · Single correct · CBSE · Mathematics · Inverse Trigonometric Functions · Inverse Trigonometric Functions

Problem

A solution of the equation tan⁡−1(1+x)+tan⁡−1(1−x)=π2\tan^{-1}(1+x) + \tan^{-1}(1-x) = \frac{\pi}{2} is (a) x=1x = 1 (b) x=−1x = -1 (c) x=0x = 0 (d) x=πx = \pi

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