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y=3x is tangent to the parabola 2y=ax^2+...

y=3x is tangent to the parabola `2y=ax^2+ab`.
If (2,6) is the point of contact , then the value of 2a is

A

2

B

3

C

4

D

5

Text Solution

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The correct Answer is:
B
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ARIHANT MATHS ENGLISH-PARABOLA-Exercise (Passage Based Questions)
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  14. Tangent to the parabola y=x^(2)+ax+1 at the point of intersection of t...

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