4*x - 19
4*acos(x) - -----------
________
/ 2
\/ 1 - x
$$4 \operatorname{acos}{\left(x \right)} - \frac{4 x - 19}{\sqrt{1 - x^{2}}}$$
/ x*(-19 + 4*x)\
-|8 + -------------|
| 2 |
\ 1 - x /
---------------------
________
/ 2
\/ 1 - x
$$- \frac{\frac{x \left(4 x - 19\right)}{1 - x^{2}} + 8}{\sqrt{1 - x^{2}}}$$
/ 2 \
| 3*x |
-12*x + |-1 + -------|*(-19 + 4*x)
| 2|
\ -1 + x /
----------------------------------
3/2
/ 2\
\1 - x /
$$\frac{- 12 x + \left(4 x - 19\right) \left(\frac{3 x^{2}}{x^{2} - 1} - 1\right)}{\left(1 - x^{2}\right)^{\frac{3}{2}}}$$