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Equation of the normal to the curve `((x)/(a))^(4)+((y)/(b))^(4)=2` at `(a,b)` is

A

`x+y=a+b`

B

`x-y=a-b`

C

`bx-ay=0`

D

`ax-by=a^(2)-b^(2)`

Text Solution

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The correct Answer is:
D
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