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