-t
--------------
___________
/ 2 2
\/ 1 - t *w
$$- \frac{t}{\sqrt{- t^{2} w^{2} + 1}}$$
3
-w*t
--------------
3/2
/ 2 2\
\1 - t *w /
$$- \frac{t^{3} w}{\left(- t^{2} w^{2} + 1\right)^{\frac{3}{2}}}$$
/ 2 2 \
3 | 3*t *w |
-t *|1 + ---------|
| 2 2|
\ 1 - t *w /
--------------------
3/2
/ 2 2\
\1 - t *w /
$$- \frac{t^{3} \cdot \left(\frac{3 t^{2} w^{2}}{- t^{2} w^{2} + 1} + 1\right)}{\left(- t^{2} w^{2} + 1\right)^{\frac{3}{2}}}$$