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If x=e^(t)sint and y=e^(t)cost, then t...

If `x=e^(t)sint` and `y=e^(t)cost`, then the value of `(x+y)^(2)(d^(2)y)/(dx^(2))-2x(dy)/(dx)` is -

A

2y

B

`2y`

C

4y

D

`-4y`

Text Solution

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The correct Answer is:
B
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CHHAYA PUBLICATION-MCQ ZONE -Question Paper 4
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