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Let a curve y=f(x),f(x)ge0, AA x in R ha...

Let a curve `y=f(x),f(x)ge0, AA x in R` has property that for every point P on the curve length of subnormal is equal to abscissa of p. If `f(1)=3`, then f(4) is equal to

A

`-2sqrt6`

B

`2sqrt6`

C

`3sqrt5`

D

None of these

Text Solution

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The correct Answer is:
B
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