Q. 35.0( 1 Vote )

Differentiate the following functions with respect to x :

(1 + cos x)x

Answer :

Let y = (1 + cos x)x

Taking log both the sides:

log y = log (1 + cos x)x

log y = x log (1+ cos x) {log xa = alog x}

Differentiating with respect to x:

Put the value of y = (1 + cos x)x :

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