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1. |
Differentiate xn cot x |
Answer» By Product Rule: (uv)′ = u′v + uv′ Here u = xn and v = cot x (xn cot x)’ = nxn-1 (cot x) + xn (- cosec2x) = nxn-1 (cot x) – xn (cosec2x) = xn-1 (n cot x – x cosec2x) |
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