The value of $\log _{e} 2 \frac{d}{d x}\left(\log _{\cos x} \operatorname{cosec} x\right)$ at $x=\frac{\pi}{4}$ is - DASH

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Question

The value of $\log _{e} 2 \frac{d}{d x}\left(\log _{\cos x} \operatorname{cosec} x\right)$ at $x=\frac{\pi}{4}$ is

$-2 \sqrt{2}$

$2 \sqrt{2}$

$-4$

4

Solution

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