/ / 2 \ \
| | 4*x | |
| |-1 + -------|*atan(2*x) |
| | 2| |
| 8*x \ -1 + x / 4*x |
2*|----------- - ------------------------ + --------------------|
| 2 2 / 2\ / 2\|
|/ 2\ -1 + x \1 + 4*x /*\-1 + x /|
\\1 + 4*x / /
-----------------------------------------------------------------
2
-1 + x
$$\frac{2 \left(\frac{8 x}{\left(4 x^{2} + 1\right)^{2}} + \frac{4 x}{\left(x^{2} - 1\right) \left(4 x^{2} + 1\right)} - \frac{\left(\frac{4 x^{2}}{x^{2} - 1} - 1\right) \operatorname{atan}{\left(2 x \right)}}{x^{2} - 1}\right)}{x^{2} - 1}$$
/ / 2 \ / 2 \ / 2 \ \
| | 16*x | | 4*x | | 2*x | |
| 4*|-1 + --------| 3*|-1 + -------| 6*x*|-1 + -------|*atan(2*x)|
| | 2| 2 | 2| | 2| |
| \ 1 + 4*x / 24*x \ -1 + x / \ -1 + x / |
4*|- ----------------- - --------------------- - -------------------- + ----------------------------|
| 2 2 / 2\ / 2\ 2 |
| / 2\ / 2\ / 2\ \1 + 4*x /*\-1 + x / / 2\ |
\ \1 + 4*x / \1 + 4*x / *\-1 + x / \-1 + x / /
-----------------------------------------------------------------------------------------------------
2
-1 + x
$$\frac{4 \left(- \frac{24 x^{2}}{\left(x^{2} - 1\right) \left(4 x^{2} + 1\right)^{2}} + \frac{6 x \left(\frac{2 x^{2}}{x^{2} - 1} - 1\right) \operatorname{atan}{\left(2 x \right)}}{\left(x^{2} - 1\right)^{2}} - \frac{4 \left(\frac{16 x^{2}}{4 x^{2} + 1} - 1\right)}{\left(4 x^{2} + 1\right)^{2}} - \frac{3 \left(\frac{4 x^{2}}{x^{2} - 1} - 1\right)}{\left(x^{2} - 1\right) \left(4 x^{2} + 1\right)}\right)}{x^{2} - 1}$$