/ / 4 \\
| 2 | 36*x ||
| 3*(-4 + x) *|-1 + --------||
| | 4||
3 | / 2\ 30*x*(-4 + x) \ 1 + 9*x /|
2*(-4 + x) *|10*acot\3*x / - ------------- + ---------------------------|
| 4 4 |
\ 1 + 9*x 1 + 9*x /
$$2 \left(x - 4\right)^{3} \left(- \frac{30 x \left(x - 4\right)}{9 x^{4} + 1} + \frac{3 \left(x - 4\right)^{2} \left(\frac{36 x^{4}}{9 x^{4} + 1} - 1\right)}{9 x^{4} + 1} + 10 \operatorname{acot}{\left(3 x^{2} \right)}\right)$$
/ / 4 \ / 4 \\
| 2 | 36*x | 3 3 | 72*x ||
| 15*(-4 + x) *|-1 + --------| 36*x *(-4 + x) *|-5 + --------||
| | 4| | 4||
2 | / 2\ 60*x*(-4 + x) \ 1 + 9*x / \ 1 + 9*x /|
6*(-4 + x) *|10*acot\3*x / - ------------- + ---------------------------- - -------------------------------|
| 4 4 2 |
| 1 + 9*x 1 + 9*x / 4\ |
\ \1 + 9*x / /
$$6 \left(x - 4\right)^{2} \left(- \frac{36 x^{3} \left(x - 4\right)^{3} \left(\frac{72 x^{4}}{9 x^{4} + 1} - 5\right)}{\left(9 x^{4} + 1\right)^{2}} - \frac{60 x \left(x - 4\right)}{9 x^{4} + 1} + \frac{15 \left(x - 4\right)^{2} \left(\frac{36 x^{4}}{9 x^{4} + 1} - 1\right)}{9 x^{4} + 1} + 10 \operatorname{acot}{\left(3 x^{2} \right)}\right)$$