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If f(x)=(ax^2+x-2)/(a+x-2x^2) has the ra...

If `f(x)=(ax^2+x-2)/(a+x-2x^2)` has the range `R` when `x in R` then

A

`a in (-(1)/(8),1)`

B

`a in (-(1)/(8) , 3)`

C

`a in [1,3]`

D

None of these

Text Solution

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The correct Answer is:
D
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