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Question

Find the equation of normal having slope 1 to the parabola
y2=4x


A

y=x3

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B

y=x+3

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C

y=x

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D

y=2x3

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Solution

The correct option is A

y=x3


For a given slope m the equation of unique normal is given by y=mx2amam3

Here a = 1.

y=(1)x2(1)(1)(1)(1)3y=x21y=x3


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