Question:
Let $f:(1,3) \rightarrow \mathrm{R}$ be a function defined by $f(\mathrm{x})=\frac{\mathrm{x}[\mathrm{x}]}{1+\mathrm{x}^{2}}$, where $[\mathrm{x}]$ denotes the greatest integer $\leq \mathrm{x}$. Then the range of $f$ is
Correct Option: , 4
Solution:
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