The first derivative
[src]
x
------ + atan(x) + cos(x)
2
1 + x
$$\frac{x}{x^{2} + 1} + \cos{\left(x \right)} + \operatorname{atan}{\left(x \right)}$$
The second derivative
[src]
2
2 2*x
-sin(x) + ------ - ---------
2 2
1 + x / 2\
\1 + x /
$$- \frac{2 x^{2}}{\left(x^{2} + 1\right)^{2}} - \sin{\left(x \right)} + \frac{2}{x^{2} + 1}$$
The third derivative
[src]
3
8*x 8*x
-cos(x) - --------- + ---------
2 3
/ 2\ / 2\
\1 + x / \1 + x /
$$\frac{8 x^{3}}{\left(x^{2} + 1\right)^{3}} - \frac{8 x}{\left(x^{2} + 1\right)^{2}} - \cos{\left(x \right)}$$