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A function f:RtoR where R is the set of ...

A function `f:RtoR` where R is the set of real numbers,is defined by `f(x)=(alphax^2+6x-8)/(alpha+6x-8x^2)`
value of `alpha` for which f is onto.

A

(2,14)

B

[2,4]

C

(-2,2)

D

[-4,4]

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A, B
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