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5. Continuity and Differentiability
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Q7 of 147 Page 178

Differentiate the functions given in w.r.t. x.

(log x)x + xlog x

Given: (log x)x + xlog x

Let y= (log x)x + xlog x


Let y = u + v


⇒ u = (log x)x and v = xlog x


For, u =(log x)x


Taking log on both sides, we get


log u =log (log x)x


⇒log u = x.log (log(x))


Now, differentiate both sides with respect to x








For, v = xlog x


Taking log on both sides, we get


log v =log( xlog x)


⇒log v = log x. log x


Now, differentiate both sides with respect to x







Because, y = u + v




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Questions · 147
5. Continuity and Differentiability
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