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A function f: IR ->IR, where IR, is t...

A function `f: IR ->IR`, where `IR`, is the set of real numbers, is defined by `f(x) = (ax^2 + 6x - 8)/(a+6x-8x^2)` Find the interval of values of a for which is onto. Is the functions one-to-one for `a =3 ?` Justify your answer.

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