/ / 2 \ \
| 3 | 21*x 196*x *acot(7*x)| |
| 686*log (x)*|-acot(7*x) + --------- + ----------------| |
| | 2 2 | 2 / 2 \ 2 |
2 | \ 1 + 49*x 1 + 49*x / 5*acot (7*x)*\6 + log (x) - 6*log(x)/ 735*log (x)*(1 + 14*x*acot(7*x)) 105*(-4 + log(x))*acot(7*x)*log(x)|
2*log (x)*|- ------------------------------------------------------- + ------------------------------------- + -------------------------------- + ----------------------------------|
| 2 3 2 2 / 2\ |
| / 2\ x / 2\ x *\1 + 49*x / |
\ \1 + 49*x / x*\1 + 49*x / /