/ 2 2 / 2\ \
| 2*x 2*x *log\1 + x / |
2*|1 - ------ + ---------------------------|
| 2 / 2\ / 2/ 2\\|
\ 1 + x \1 + x /*\1 - log \1 + x ///
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__________________
/ 2\ / 2/ 2\
\1 + x /*\/ 1 - log \1 + x / $$\frac{1}{\left(x^{2} + 1\right) \sqrt{- \log^{2}{\left (x^{2} + 1 \right )} + 1}} \left(- \frac{4 x^{2}}{x^{2} + 1} + \frac{4 x^{2} \log{\left (x^{2} + 1 \right )}}{\left(x^{2} + 1\right) \left(- \log^{2}{\left (x^{2} + 1 \right )} + 1\right)} + 2\right)$$
/ / 2\ 2 2 2 / 2\ 2 2/ 2\ \
| 3*log\1 + x / 4*x 2*x 6*x *log\1 + x / 6*x *log \1 + x / |
4*x*|-3 + ---------------- + ------ + --------------------------- - --------------------------- + ----------------------------|
| 2/ 2\ 2 / 2\ / 2/ 2\\ / 2\ / 2/ 2\\ 2|
| 1 - log \1 + x / 1 + x \1 + x /*\1 - log \1 + x // \1 + x /*\1 - log \1 + x // / 2\ / 2/ 2\\ |
\ \1 + x /*\1 - log \1 + x // /
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2 __________________
/ 2\ / 2/ 2\
\1 + x / *\/ 1 - log \1 + x / $$\frac{4 x}{\left(x^{2} + 1\right)^{2} \sqrt{- \log^{2}{\left (x^{2} + 1 \right )} + 1}} \left(\frac{4 x^{2}}{x^{2} + 1} - \frac{6 x^{2} \log{\left (x^{2} + 1 \right )}}{\left(x^{2} + 1\right) \left(- \log^{2}{\left (x^{2} + 1 \right )} + 1\right)} + \frac{2 x^{2}}{\left(x^{2} + 1\right) \left(- \log^{2}{\left (x^{2} + 1 \right )} + 1\right)} + \frac{6 x^{2} \log^{2}{\left (x^{2} + 1 \right )}}{\left(x^{2} + 1\right) \left(- \log^{2}{\left (x^{2} + 1 \right )} + 1\right)^{2}} - 3 + \frac{3 \log{\left (x^{2} + 1 \right )}}{- \log^{2}{\left (x^{2} + 1 \right )} + 1}\right)$$