/ / _________\ _________ / _________\\ |(3*x - 1)*atan\\/ 3*x - 1 / \/ 3*x - 1 - atan\\/ 3*x - 1 /| 2*|--------------------------- - -------------------------------| \ 2 2 / ----------------------------------------------------------------- 3
__________ / __________\ / __________\ \/ -1 + 3*x atan\\/ -1 + 3*x / (-1 + 3*x)*atan\\/ -1 + 3*x / - ------------ + ------------------ + ----------------------------- 3 3 3
0.333333333333333*atan(sqrt(3*x - 1)) - 0.333333333333333*(-1.0 + 3.0*x)^0.5 + 0.333333333333333*(-1.0 + 3.0*x)*atan(sqrt(3*x - 1))
__________ / __________\ - \/ -1 + 3*x + 3*x*atan\\/ -1 + 3*x / --------------------------------------- 3
__________ / __________\ / __________\ \/ -1 + 3*x atan\\/ -1 + 3*x / (-1 + 3*x)*atan\\/ -1 + 3*x / - ------------ + ------------------ + ----------------------------- 3 3 3
/ _________ / _________\\ / _________\ 2*\\/ 3*x - 1 - atan\\/ 3*x - 1 // 2*(3*x - 1)*atan\\/ 3*x - 1 / - ----------------------------------- + ----------------------------- 3*2 3*2
__________ \/ -1 + 3*x / __________\ - ------------ + x*atan\\/ -1 + 3*x / 3
__________ / __________\ - \/ -1 + 3*x + 3*x*atan\\/ -1 + 3*x / --------------------------------------- 3