3*(4*x - 3)
4*atan(3*x) + -----------
2
1 + 9*x
$$\frac{3 \left(4 x - 3\right)}{9 x^{2} + 1} + 4 \operatorname{atan}{\left(3 x \right)}$$
/ 9*x*(-3 + 4*x)\
6*|4 - --------------|
| 2 |
\ 1 + 9*x /
----------------------
2
1 + 9*x
$$\frac{6 \left(- \frac{9 x \left(4 x - 3\right)}{9 x^{2} + 1} + 4\right)}{9 x^{2} + 1}$$
/ / 2 \ \
| | 36*x | |
54*|-12*x + |-1 + --------|*(-3 + 4*x)|
| | 2| |
\ \ 1 + 9*x / /
---------------------------------------
2
/ 2\
\1 + 9*x /
$$\frac{54 \left(- 12 x + \left(4 x - 3\right) \left(\frac{36 x^{2}}{9 x^{2} + 1} - 1\right)\right)}{\left(9 x^{2} + 1\right)^{2}}$$