If x="at"^(2),y=2"at", then (d^(2)y)/(dx...

If `x="at"^(2),y=2"at"`, then `(d^(2)y)/(dx^(2))=` . . . .

A

`-2at^(3)`

B

`(-1)/(t^(2))`

C

`(-1)/(2at^(3))`

D

`(1)/(2a)`

Verified by Experts

The correct Answer is:

D

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