Q. 24.7( 3 Votes )

Differentiate each of the following w.r.t. x:

cos 5x

Answer :

Formulae :


y = cos 5x

and u = 5x

therefore, y= cos u

Differentiating above equation w.r.t. x,

………… By chain rule


= - sin 5x . 5

= - 5 sin 5x

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