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If x = a cos^4 t , y = b sin^4 t then (...

If `x = a cos^4 t , y = b sin^4 t ` then `(dy)/(dx)` at `t= pi/4` is

A

`(-b)/a`

B

`b/a`

C

`a/b`

D

`(-a)/b`

Text Solution

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The correct Answer is:
A
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