/ / 4 \\
| 24*x*|1 - ------|| /x\
| 3 2 | 2|| -x + 2*atan|-|
| / 4 \ 8 32*x \ 4 + x /| \2/
|- |1 - ------| - --------- + --------- + -----------------|*e
| | 2| 2 3 2 |
| \ 4 + x / / 2\ / 2\ / 2\ |
\ \4 + x / \4 + x / \4 + x / /
$$\left(\frac{32 x^{2}}{\left(x^{2} + 4\right)^{3}} + \frac{24 x \left(1 - \frac{4}{x^{2} + 4}\right)}{\left(x^{2} + 4\right)^{2}} - \left(1 - \frac{4}{x^{2} + 4}\right)^{3} - \frac{8}{\left(x^{2} + 4\right)^{2}}\right) e^{- x + 2 \operatorname{atan}{\left(\frac{x}{2} \right)}}$$