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