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If f(x) = a log |x| + bx^(2) + x has ext...

If f(x) = a log |x| + `bx^(2)` + x has extreme values at x = -1 and x = 2 , then the ordered pair (a,b) =

A

a=2, b=-1

B

a=2,b=`-1//2`

C

a=-2,b=1/2

D

a=1,b=1

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AAKASH SERIES-MAXIMA & MINIMA-EXERCISE-II
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