2
--------------
2
1 + (2*x - 1)
$$\frac{2}{\left(2 x - 1\right)^{2} + 1}$$
-8*(-1 + 2*x)
------------------
2
/ 2\
\1 + (-1 + 2*x) /
$$- \frac{16 x - 8}{\left(\left(2 x - 1\right)^{2} + 1\right)^{2}}$$
/ 2 \
| 4*(-1 + 2*x) |
16*|-1 + ---------------|
| 2|
\ 1 + (-1 + 2*x) /
-------------------------
2
/ 2\
\1 + (-1 + 2*x) /
$$\frac{\frac{64 \left(2 x - 1\right)^{2}}{\left(2 x - 1\right)^{2} + 1} - 16}{\left(\left(2 x - 1\right)^{2} + 1\right)^{2}}$$