/x\ atan|-| \3/ x ------- + ----------- 54 2 162 + 18*x
atan(x/3)/54 + x/(162 + 18*x^2)
/ 2\ /x\ 3*x + \9 + x /*atan|-| \3/ ---------------------- / 2\ 54*\9 + x /
(3*x + (9 + x^2)*atan(x/3))/(54*(9 + x^2))
0.0185185185185185*atan(x/3) + x/(162.0 + 18.0*x^2)
0.0185185185185185*atan(x/3) + x/(162.0 + 18.0*x^2)
/ 2\ /x\ 3*x + \9 + x /*atan|-| \3/ ---------------------- / 2\ 54*\9 + x /
(3*x + (9 + x^2)*atan(x/3))/(54*(9 + x^2))
/x\ 2 /x\ 3*x + 9*atan|-| + x *atan|-| \3/ \3/ ---------------------------- / 2\ 54*\9 + x /
(3*x + 9*atan(x/3) + x^2*atan(x/3))/(54*(9 + x^2))
/ 2\ /x\ 54*x + \162 + 18*x /*atan|-| \3/ ---------------------------- 2 8748 + 972*x
(54*x + (162 + 18*x^2)*atan(x/3))/(8748 + 972*x^2)