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If x=cos^(3)theta and y=sin^(3)theta, th...

If `x=cos^(3)theta` and `y=sin^(3)theta`, then `1+(d^2y)/dx^(2)` is equal to

A

`tan^(2)theta`

B

`cot^(2)theta`

C

`sec^(2)theta`

D

`cosec^(2)theta`

Text Solution

Verified by Experts

The correct Answer is:
C
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