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If x=e^z then x^2(d^2y)/(dx^2) is...

If `x=e^z ` then `x^2(d^2y)/(dx^2)` is

A

`(d^2y)/(dz^2)-(dy)/dz`

B

`(d^2y)/(dz^2)+(dy)/dz`

C

`(dy)/(dz)+(d^2y)/dz^2`

D

none of these

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The correct Answer is:
A
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