Let . Then the value of…

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

Problem

Let y=ln⁡(1+cos⁡x)2y=\ln(1+\cos x)^2. Then the value of d2ydx2+2ey/2\frac{d^2y}{dx^2}+\frac{2}{e^{y/2}} is (1) 00 (2) 21+cos⁡x\frac{2}{1+\cos x} (3) 41+cos⁡x\frac{4}{1+\cos x} (4) −4(1+cos⁡x)2\frac{-4}{(1+\cos x)^2}

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