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If y= a log x+bx^(2)+x has its extreme v...

If `y= a log x+bx^(2)+x` has its extreme values 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.

Text Solution

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The correct Answer is:
C
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