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Differentiate Cos ( Log X ) 2 ? - Mathematics

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प्रश्न

Differentiate \[\cos \left( \log x \right)^2\] ?

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उत्तर

\[\text{Let } y = \cos \left( \log x \right)^2 \]

Differentiating with respect to x,

\[\frac{d y}{d x} = \frac{d}{dx}\left\{ \cos \left( \log x \right)^2 \right\}\]

\[ = - \sin \left( \log x \right)^2 \frac{d}{dx} \left( \log x \right)^2 \]

\[ = - \sin \left( \log x \right)^2 \frac{2\log x}{x} \]

\[ = \frac{- 2\log x \sin \left( \log x \right)^2}{x}\]

\[So, \frac{d}{dx}\left( \cos \left( \log x \right)^2 \right) = \frac{- 2\log x \sin \left( \log x \right)^2}{x}\]

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अध्याय 11: Differentiation - Exercise 11.02 [पृष्ठ ३८]

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आरडी शर्मा Mathematics [English] Class 12
अध्याय 11 Differentiation
Exercise 11.02 | Q 56 | पृष्ठ ३८

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