Differentiation Question 337

Question: The differential coefficient of $ f(\sin x) $ with respect to x, where $ f(x)=\log x $ , is

[Karnataka CET 2004]

Options:

A) $ \tan x $

B) $ \cot x $

C) $ f(\cos x) $

D) $ 1/x $

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Answer:

Correct Answer: B

Solution:

$ \frac{d}{dx}[f(\sin x)]=\frac{d}{dx}[\log (\sin x)]=\frac{1}{\sin x}.\cos x=\cot x $ .