Q17 of 285 Page 370

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

sec3 (

Formulae :


•


•


Let,


y = sec3 (x2+1)


and u = x2+1


therefore, y= sec3 u


let, v = sec u


therefore, y= v3


Differentiating above equation w.r.t. x,


………… By chain rule



………….





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