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Find the derivative r = cos x cot x. |
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Answer» r = cos x cot x \(\frac{dr}{dx}\) = cos x \(\frac{d}{dx}\) cot x + (\(\frac{d}{dx}\)cos x) cot x = cos x (- cosec2x) - sin x cot x = - cos x. cosec2 x - sin x\(\frac{cosx}{sin x}\) = - cos x (cosec2x + 1) |
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