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<function plot at 0x2ea0668>
\newcommand{\Bold}[1]{\mathbf{#1}}x \ {\mapsto}\ \frac{2 \, x}{x^{2} + 3} + \frac{1}{x + 2} + \frac{4 \, x}{{\left(x^{2} + 3\right)}^{2}}