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x = t cos t , y = t + sint. Then (d^2x)/...

`x = t cos t , y = t + sint`. Then `(d^2x)/(dy^2)` at `t = pi/2`

A

`(pi + 4)/2`

B

`-(pi + 4)/2`

C

`-2`

D

`2`

Text Solution

Verified by Experts

The correct Answer is:
D
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