If , then…

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

Problem

If x1+y+y1+x=0x\sqrt{1+y}+y\sqrt{1+x}=0, then dydx\frac{dy}{dx} equals (1) 1(1+x)2\frac{1}{(1+x)^2} (2) −1(1+x)2-\frac{1}{(1+x)^2} (3) −11+x+1(1+x)2-\frac{1}{1+x}+\frac{1}{(1+x)^2} (4) None of these

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