2*y
-----------
________
/ 4
\/ 1 - y
$$\frac{2 y}{\sqrt{1 - y^{4}}}$$
/ 4 \
| 2*y |
2*|1 + ------|
| 4|
\ 1 - y /
--------------
________
/ 4
\/ 1 - y
$$\frac{2 \left(\frac{2 y^{4}}{1 - y^{4}} + 1\right)}{\sqrt{1 - y^{4}}}$$
/ 4 \
3 | 6*y |
4*y *|5 + ------|
| 4|
\ 1 - y /
-----------------
3/2
/ 4\
\1 - y /
$$\frac{4 y^{3} \left(\frac{6 y^{4}}{1 - y^{4}} + 5\right)}{\left(1 - y^{4}\right)^{\frac{3}{2}}}$$