2/ ___\ x*atan(x) - log \\/ x / + 1
x*atan(x) - log(sqrt(x))^2 + 1
/ ___\ x log\\/ x / ------ - ---------- + atan(x) 2 x 1 + x
/ ___\ 2 2 1 log\\/ x / 2*x ------ - ---- + ---------- - --------- 2 2 2 2 1 + x 2*x x / 2\ \1 + x /
/ ___\ 3 3 8*x 2*log\\/ x / 8*x ---- - --------- - ------------ + --------- 3 2 3 3 2*x / 2\ x / 2\ \1 + x / \1 + x /