Q. 155.0( 2 Votes )

# Find , when

If x = e^{cos} ^{2 t} and y = e^{sin} ^{2t}, prove that

Answer :

Here ,

Differentiating it with respect to using chain rule ,

……(1)

And,

Differentiating it with respect to using chain rule ,

……(2)

dividing equation (2)by (1),

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