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The normal to the curve x^2=4y passing ...

The normal to the curve `x^2=4y` passing (1,2) is
(A) `x + y = 3`
(B) `x y = 3`
(C) `x + y = 1`
(D) `x y = 1`

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Verified by Experts

Option `A` is the correct answer
Given `x^2=4y`
Slope of tangent to the curve will be `4 dy/dx=2x`
`=>dy/dx=x/2`
...
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NCERT ENGLISH-APPLICATION OF DERIVATIVES-SOLVED EXAMPLES
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