Q. 64.7( 9 Votes )

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

tan3x

Answer :

Formulae :




Let,


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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