Let $f: \mathbb R \rightarrow \mathcal B$ is given by

$\large f(x)=\frac{2x^8+6x^4+4x^2+3}{x^8+3x^4+2x^2+1}$

How many integral values does $\mathcal B$ includes for $f(x)$ to be onto function?

Wanna try more problems on functions ?

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