Q. 64.7( 9 Votes )

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


Answer :

Formulae :


y = tan3 x

and u = tan x

therefore, y= u3

Differentiating above equation w.r.t. x,

………… By chain rule


= 3 tan2 x .(sec2 x)

= 3 tan2 x . sec2 x

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