The first derivative
[src]
2
atan (x) x*atan(x)
-------- + ---------
2 2
1 + x
$$\frac{\operatorname{atan}^{2}{\left(x \right)}}{2} + \frac{x \operatorname{atan}{\left(x \right)}}{x^{2} + 1}$$
The second derivative
[src]
x*(-1 + 2*x*atan(x))
2*atan(x) - --------------------
2
1 + x
--------------------------------
2
1 + x
$$\frac{- \frac{x \left(2 x \operatorname{atan}{\left(x \right)} - 1\right)}{x^{2} + 1} + 2 \operatorname{atan}{\left(x \right)}}{x^{2} + 1}$$
The third derivative
[src]
/ / 2 \ \
| | 3*x 4*x *atan(x) | |
-|-3 + 2*x*|------ - ------------ + atan(x)| + 6*x*atan(x)|
| | 2 2 | |
\ \1 + x 1 + x / /
------------------------------------------------------------
2
/ 2\
\1 + x /
$$- \frac{2 x \left(- \frac{4 x^{2} \operatorname{atan}{\left(x \right)}}{x^{2} + 1} + \operatorname{atan}{\left(x \right)} + \frac{3 x}{x^{2} + 1}\right) + 6 x \operatorname{atan}{\left(x \right)} - 3}{\left(x^{2} + 1\right)^{2}}$$