Continuity and Differentiability — Maths STD 12 Science — Question
Gujarat BoardEnglish MediumSTD 12 ScienceMathsContinuity and Differentiability1 Mark
Question
Differentiate cos–1(ex) w.r.t. x.
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Answer
Let $y = cos^{–1} (e^x)$. Using the chain rule, we have $\frac{d y}{d x}=\frac{-1}{\sqrt{1-\left(e^{x}\right)^{2}}} \cdot \frac{d}{d x}\left(e^{x}\right)=\frac{-e^{x}}{\sqrt{1-e^{2 x}}}$
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