Q. 154.9( 9 Votes )

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

Answer :

Formulae :

• 1 – sin2x = cos2x


Multiplying numerator and denominator by (1+sin x),

……………. (1 – sin2x = cos2x)

y = sec x + tan x

Differentiating above equation w.r.t. x,


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