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