\[
\begin{array}{l}
\text { If } f ;(0, \infty) \rightarrow N \text { and } f(x)=\left[\frac{x^{...
\[
\begin{array}{l}
\text { If } f ;(0, \infty) \rightarrow N \text { and } f(x)=\left[\frac{x^{2}+x+1}{x^{2}+1}\right]+\left[\frac{4 x^{2}+x+2}{2 x^{2}+1}\right] \\
+\left[\frac{9 x^{2}+x+3}{3 x^{2}+1}\right]+\ldots+\left[\frac{n^{2} x^{2}+x+n}{n x^{2}+1}\right], n \in N \text { then find } f(3)
\end{array}
\]
for \( n=10 \) ([.] is G.I.F.)
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0