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The sum of the squares of the perpendicu...

The sum of the squares of the perpendicular drawn from the points (0,1) and `(0,-1)` to any tangent to a curve is 2. The equation of the curve, is

A

`2y' = c(x+2) `

B

`y=c'(x+1)`

C

`2y=c'(x+2)`

D

`yy'=c(x+1)`

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The correct Answer is:
B
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