-4*x
-------------
__________
/ 2
\/ 1 - 4*x
$$- \frac{4 x}{\sqrt{- 4 x^{2} + 1}}$$
/ 2 \
| 4*x |
-4*|1 + --------|
| 2|
\ 1 - 4*x /
-----------------
__________
/ 2
\/ 1 - 4*x $$- \frac{\frac{16 x^{2}}{- 4 x^{2} + 1} + 4}{\sqrt{- 4 x^{2} + 1}}$$
/ 2 \
| 4*x |
-48*x*|1 + --------|
| 2|
\ 1 - 4*x /
--------------------
3/2
/ 2\
\1 - 4*x / $$- \frac{48 x \left(\frac{4 x^{2}}{- 4 x^{2} + 1} + 1\right)}{\left(- 4 x^{2} + 1\right)^{\frac{3}{2}}}$$