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Question

Find the derivative of xnanxa for some constant a.

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Solution

Here f(x) = xnanxa

f'(x) =ddx[xnanxa]

= (xa)ddx(xnan)(xnan)ddx(xa)(xa)2

= (xa)×nxn1(xnan)×1(xa)2

= nx2anxn1xn+an(xa)2


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