CBSE

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

Problem

If y=x2+1+x2−1x2+1−x2−1y=\frac{\sqrt{x^2+1}+\sqrt{x^2-1}}{\sqrt{x^2+1}-\sqrt{x^2-1}}, then dydx=\frac{dy}{dx}= (a) 2x+2x3x4−12x+\frac{2x^3}{\sqrt{x^4-1}} (b) 2x+x3x4−12x+\frac{x^3}{\sqrt{x^4-1}} (c) x+2x3x4−1x+\frac{2x^3}{\sqrt{x^4-1}} (d) None of these

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