2*x
- ------------- + acos(2*x)
__________
/ 2
\/ 1 - 4*x
$$\operatorname{acos}{\left(2 x \right)} - \frac{2 x}{\sqrt{- 4 x^{2} + 1}}$$
/ 2 \
| 2*x |
-4*|1 + --------|
| 2|
\ 1 - 4*x /
-----------------
__________
/ 2
\/ 1 - 4*x
$$- \frac{4 \cdot \left(\frac{2 x^{2}}{- 4 x^{2} + 1} + 1\right)}{\sqrt{- 4 x^{2} + 1}}$$
/ 2 \
| 12*x |
8*x*|-4 + ---------|
| 2|
\ -1 + 4*x /
--------------------
3/2
/ 2\
\1 - 4*x /
$$\frac{8 x \left(\frac{12 x^{2}}{4 x^{2} - 1} - 4\right)}{\left(- 4 x^{2} + 1\right)^{\frac{3}{2}}}$$