Q. 335.0( 6 Votes )

If 𝒴 = , prove that + 𝒴2 +1 =0.

Answer :

Formulae :









Given,



Dividing numerator and denominator by cosx,



………….


………….


Differentiating above equation w.r.t. x ,



………….


………….


………….




Now,



………….


= 0



Hence Proved.


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