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The curve x = y^(2) and xy = k cut at ri...

The curve `x = y^(2)` and xy = k cut at right angles if

A

`2k^(2) = 1`

B

`4k^(2) =1`

C

`6k^(2) =1`

D

`8k^(2) =1`

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The correct Answer is:
D
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