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If y=a log x +bx^(2)+x has its exteme va...

If `y=a log x +bx^(2)+x` has its exteme values at x=-1 and x=2, then find a and b.

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:
B
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