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The tangent to the curve y=ax^2+bx at (2...

The tangent to the curve `y=ax^2+bx` at (2,-8) is parallel to X-axis then

A

a=2,b=-2

B

a=2,b=-4

C

a=2,b=-8

D

a=4,b=-4

Text Solution

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The correct Answer is:
C
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