1
-2*x - -----------
2 / 1 \
x *|1 + --|
| 2|
\ x /
$$- 2 x - \frac{1}{x^{2} \cdot \left(1 + \frac{1}{x^{2}}\right)}$$
/ 1 1 \
2*|-1 + ----------- - ------------|
| 3 / 1 \ 2|
| x *|1 + --| 5 / 1 \ |
| | 2| x *|1 + --| |
| \ x / | 2| |
\ \ x / /
$$2 \left(-1 + \frac{1}{x^{3} \cdot \left(1 + \frac{1}{x^{2}}\right)} - \frac{1}{x^{5} \left(1 + \frac{1}{x^{2}}\right)^{2}}\right)$$
/ 4 7 \
2*|-3 - ------------ + -----------|
| 2 2 / 1 \|
| 4 / 1 \ x *|1 + --||
| x *|1 + --| | 2||
| | 2| \ x /|
\ \ x / /
-----------------------------------
4 / 1 \
x *|1 + --|
| 2|
\ x /
$$\frac{2 \left(-3 + \frac{7}{x^{2} \cdot \left(1 + \frac{1}{x^{2}}\right)} - \frac{4}{x^{4} \left(1 + \frac{1}{x^{2}}\right)^{2}}\right)}{x^{4} \cdot \left(1 + \frac{1}{x^{2}}\right)}$$