sin(atan(x))
sin(atan(x))
1
-----------
3/2
/ 2\
\1 + x /
-3*x
-----------
5/2
/ 2\
\1 + x /
/ 2 \
| 5*x |
3*|-1 + ------|
| 2|
\ 1 + x /
---------------
5/2
/ 2\
\1 + x /