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If x = -1 and x = 2 are extreme points o...

If x = -1 and x = 2 are extreme points of f(x) = `alpha log|x| + beta x^2 + x`, then

A

`alpha =2 , beta =-(1)/(2)`

B

`alpha=2,beta=(1)/(2)`

C

`alpha=-6 , beta =(1)/(2)`

D

`alpha=-6, beta =-(1)/(2)`

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A
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