/ 2\
atan\x /
2*x*e
-------------
4
1 + x
$$\frac{2 x e^{\operatorname{atan}{\left (x^{2} \right )}}}{x^{4} + 1}$$
/ 4 2 \ / 2\
| 4*x 2*x | atan\x /
2*|1 - ------ + ------|*e
| 4 4|
\ 1 + x 1 + x /
---------------------------------
4
1 + x
$$\frac{2 e^{\operatorname{atan}{\left (x^{2} \right )}}}{x^{4} + 1} \left(- \frac{4 x^{4}}{x^{4} + 1} + \frac{2 x^{2}}{x^{4} + 1} + 1\right)$$
/ 4 2 6 \ / 2\
| 2 12*x 2*x 16*x | atan\x /
4*x*|3 - 10*x - ------ + ------ + ------|*e
| 4 4 4|
\ 1 + x 1 + x 1 + x /
----------------------------------------------------
2
/ 4\
\1 + x /
$$\frac{4 x e^{\operatorname{atan}{\left (x^{2} \right )}}}{\left(x^{4} + 1\right)^{2}} \left(\frac{16 x^{6}}{x^{4} + 1} - \frac{12 x^{4}}{x^{4} + 1} - 10 x^{2} + \frac{2 x^{2}}{x^{4} + 1} + 3\right)$$