Let alpha and beta be the distinct roots...

Let `alpha and beta` be the distinct roots of `ax^(2) + bx + c = 0`, then `lim_(x rarr alpha) (1 - cos (ax^(2) + bx + c))/((x - alpha)^(2))` is equal to :

A

0

B

` a^(2)/2(alpha-beta)^(2)`

C

`1/2(alpha-beta)^(2)`

D

`- a^(2)/2(alpha-beta)^(2)`

Verified by Experts

The correct Answer is:

B

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