1
----------------------
/ 2\ _________
2*\1 + x /*\/ atan(x)
$$\frac{1}{2 \left(x^{2} + 1\right) \sqrt{\operatorname{atan}{\left(x \right)}}}$$
/ 1 \
-|x + ---------|
\ 4*atan(x)/
---------------------
2
/ 2\ _________
\1 + x / *\/ atan(x)
$$- \frac{x + \frac{1}{4 \operatorname{atan}{\left(x \right)}}}{\left(x^{2} + 1\right)^{2} \sqrt{\operatorname{atan}{\left(x \right)}}}$$
2
4*x 3 3*x
-1 + ------ + ------------------- + ------------------
2 / 2\ 2 / 2\
1 + x 8*\1 + x /*atan (x) 2*\1 + x /*atan(x)
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2
/ 2\ _________
\1 + x / *\/ atan(x)
$$\frac{\frac{4 x^{2}}{x^{2} + 1} + \frac{3 x}{2 \left(x^{2} + 1\right) \operatorname{atan}{\left(x \right)}} - 1 + \frac{3}{8 \left(x^{2} + 1\right) \operatorname{atan}^{2}{\left(x \right)}}}{\left(x^{2} + 1\right)^{2} \sqrt{\operatorname{atan}{\left(x \right)}}}$$