3
-------------
__________
/ 2
\/ 1 - 9*t
$$\frac{3}{\sqrt{- 9 t^{2} + 1}}$$
27*t
-------------
3/2
/ 2\
\1 - 9*t / $$\frac{27 t}{\left(- 9 t^{2} + 1\right)^{\frac{3}{2}}}$$
/ 2 \
| 27*t |
27*|1 + --------|
| 2|
\ 1 - 9*t /
-----------------
3/2
/ 2\
\1 - 9*t / $$\frac{\frac{729 t^{2}}{- 9 t^{2} + 1} + 27}{\left(- 9 t^{2} + 1\right)^{\frac{3}{2}}}$$