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If y = a logx + bx^(2) + x has its extre...

If y `= a logx + bx^(2) + x` has its extremum value at `x = -1 and x = 2,` then

A

a = 2, b = -1

B

a = 2, b = -1/2

C

a = -2, b = 1/2

D

none of these

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The correct Answer is:
B
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