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Let alpha and beta be the distinct roots...

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

A

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

B

0

C

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

D

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

Text Solution

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The correct Answer is:
A
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