Q25 of 285 Page 370

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

cot3

Formulae :


•


•


Let,


y = cot3 x2


and u = x2


therefore, y= cot3 u


let, v = cot u


therefore, y= v3


Differentiating above equation w.r.t. x,


………… By chain rule



………….





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