CBSE

MATHEMATICS · Single correct · CBSE · Mathematics · Continuity and Differentiability · Continuity and Differentiability

Problem

If y=log⁡(1+x1−x)1/4−12tan⁡−1xy=\log\left(\frac{1+x}{1-x}\right)^{1/4}-\frac{1}{2}\tan^{-1}x, then dydx=\frac{dy}{dx}= (a) x21−x4\frac{x^2}{1-x^4} (b) 2x21−x4\frac{2x^2}{1-x^4} (c) x22(1−x4)\frac{x^2}{2(1-x^4)} (d) None of these

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