/ 1 \
8*|-1 + -----------------------|
| 2 / 1 \|
| (1 + x) *|1 + --------||
| | 2||
\ \ (1 + x) //
--------------------------------
3 / 1 \
(1 + x) *|1 + --------|
| 2|
\ (1 + x) /
$$\frac{8 \left(-1 + \frac{1}{\left(1 + \frac{1}{\left(x + 1\right)^{2}}\right) \left(x + 1\right)^{2}}\right)}{\left(1 + \frac{1}{\left(x + 1\right)^{2}}\right) \left(x + 1\right)^{3}}$$
/ 7 4 \
8*|3 - ----------------------- + ------------------------|
| 2 / 1 \ 2|
| (1 + x) *|1 + --------| 4 / 1 \ |
| | 2| (1 + x) *|1 + --------| |
| \ (1 + x) / | 2| |
\ \ (1 + x) / /
----------------------------------------------------------
4 / 1 \
(1 + x) *|1 + --------|
| 2|
\ (1 + x) /
$$\frac{8 \left(3 - \frac{7}{\left(1 + \frac{1}{\left(x + 1\right)^{2}}\right) \left(x + 1\right)^{2}} + \frac{4}{\left(1 + \frac{1}{\left(x + 1\right)^{2}}\right)^{2} \left(x + 1\right)^{4}}\right)}{\left(1 + \frac{1}{\left(x + 1\right)^{2}}\right) \left(x + 1\right)^{4}}$$