The first derivative
[src]
1 2
- ------ + - + 3*sin(x)
2 x
1 + x
$$3 \sin{\left(x \right)} - \frac{1}{x^{2} + 1} + \frac{2}{x}$$
The second derivative
[src]
2 2*x
- -- + 3*cos(x) + ---------
2 2
x / 2\
\1 + x /
$$\frac{2 x}{\left(x^{2} + 1\right)^{2}} + 3 \cos{\left(x \right)} - \frac{2}{x^{2}}$$
The third derivative
[src]
2
2 4 8*x
-3*sin(x) + --------- + -- - ---------
2 3 3
/ 2\ x / 2\
\1 + x / \1 + x /
$$- \frac{8 x^{2}}{\left(x^{2} + 1\right)^{3}} - 3 \sin{\left(x \right)} + \frac{2}{\left(x^{2} + 1\right)^{2}} + \frac{4}{x^{3}}$$