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If x+y=k is normal to y^2=12 x , then k ...

If `x+y=k` is normal to `y^2=12 x ,` then `k` is 3 (b) 9 (c) `-9` (d) `-3`

A

3

B

9

C

-9

D

-3

Text Solution

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The correct Answer is:
B
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TARGET PUBLICATION-APPLICATIONS OF DERIVATIVES-COMPETITIVE THINKING
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