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Find the derivative of f(x) = x cos x. |
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Answer» Given, f(x) = x cos x \(f(x)=\frac{d}{dx}(xcosx)\) \(=cosx\frac{d}{dx}x +x\frac{d}{dx}cosx\) = cos x∙ 1 + x ∙(− sin x) = cos x − x sin x |
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