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If x = at^(2) and y = 2 at, then (d^(2)y...

If `x = at^(2) and y = 2` at, then `(d^(2)y)/(dx^(2))` at `t = (1)/(2)` is

A

`-(2)/(a)`

B

`(4)/(a)`

C

`(8)/(a)`

D

`(-4)/(a)`

Text Solution

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The correct Answer is:
D
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