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

y=x is tangent to the parabola `y=ax^(2)+c`.
If (1,1) is the point of contact, then a is

A

A. `1//4`

B

B. `1//3`

C

C. `1//2`

D

D. `1//6`

Text Solution

Verified by Experts

The correct Answer is:
C
(3) If (1,1) is point of contact, then a=1/2.
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