If , then…

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

Problem

If y=xa+xb+xa+…y=\frac{x}{a+\frac{x}{b+\frac{x}{a+\dots}}}, then dydx\frac{dy}{dx} equals (1) aab+2ay\frac{a}{ab+2ay} (2) bab+2by\frac{b}{ab+2by} (3) aab+2by\frac{a}{ab+2by} (4) bab+2ay\frac{b}{ab+2ay}

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