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If alpha, beta are the roots of ax^(2)+b...

If `alpha, beta` are the roots of `ax^(2)+bx+c=0` and `f(x)` is continuous at `x=alpha`, where `f(x)=(1-cos (ax^(2)+bx+c))/((x-alpha)^(2))`, for `x != alpha`, then `f(alpha)=`

A

0

B

`(4ac-b^(2))/(2)`

C

`(b^(2)-4ac)/(2)`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
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