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if sqrt(x^2+y^2)=ae^(tan^-1 (y/x)) , a >...

if `sqrt(x^2+y^2)=ae^(tan^-1 (y/x)) , a > 0, (y(0) > 0)` then `y"(0)` equals

A

`a/2e^(-n/2)`

B

`ae^(pi/2)`

C

`-(2ae^(pi/2))/3`

D

`(-2)/ae^((-pi)/2)`

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The correct Answer is:
D
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