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