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The equation of normal to the curve y = ...

The equation of normal to the curve y = `3x^(2)` - 4x +7 at x = 1 is :

A

2x - y +4 =0

B

2x +y +8 =0

C

x +2y +13 =0

D

x -2y +11 =0

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The correct Answer is:
C
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