/ / 2 \ \
| 3 | 3*(1 + 3*x) 4*(1 + 3*x) *acot(1 + 3*x)| |
| 54*log (x)*|-acot(1 + 3*x) + -------------- + --------------------------| |
| | 2 2 | 2 / 2 \ 2 |
2 | \ 1 + (1 + 3*x) 1 + (1 + 3*x) / 5*acot (1 + 3*x)*\6 + log (x) - 6*log(x)/ 135*log (x)*(1 + 2*(1 + 3*x)*acot(1 + 3*x)) 45*(-4 + log(x))*acot(1 + 3*x)*log(x)|
2*log (x)*|- ------------------------------------------------------------------------- + ----------------------------------------- + ------------------------------------------- + -------------------------------------|
| 2 3 2 2 / 2\ |
| / 2\ x / 2\ x *\1 + (1 + 3*x) / |
\ \1 + (1 + 3*x) / x*\1 + (1 + 3*x) / /