/ ___\
x log\\/ x /
------ - ---------- + atan(x)
2 x
1 + x
$$\frac{x}{x^{2} + 1} + \operatorname{atan}{\left(x \right)} - \frac{\log{\left(\sqrt{x} \right)}}{x}$$
/ ___\ 2
2 1 log\\/ x / 2*x
------ - ---- + ---------- - ---------
2 2 2 2
1 + x 2*x x / 2\
\1 + x /
$$- \frac{2 x^{2}}{\left(x^{2} + 1\right)^{2}} + \frac{2}{x^{2} + 1} + \frac{\log{\left(\sqrt{x} \right)}}{x^{2}} - \frac{1}{2 x^{2}}$$
/ ___\ 3
3 8*x 2*log\\/ x / 8*x
---- - --------- - ------------ + ---------
3 2 3 3
2*x / 2\ x / 2\
\1 + x / \1 + x /
$$\frac{8 x^{3}}{\left(x^{2} + 1\right)^{3}} - \frac{8 x}{\left(x^{2} + 1\right)^{2}} - \frac{2 \log{\left(\sqrt{x} \right)}}{x^{3}} + \frac{3}{2 x^{3}}$$