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