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If y is infinite and tan^(-1)y=4tan^(-1)...

If y is infinite and `tan^(-1)y=4tan^(-1)x` then

A

`x^(2)=3+2sqrt(2)`

B

`x^(2)=3-2sqrt(2)`

C

`x^(4)=6x^(2)-1`

D

`x^(4)=6x^(2)+1`

Text Solution

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The correct Answer is:
A, B, C
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