/ ___\
|\/ 7 |
|-----|
\ 7 / 2*x
------- + ------
2 2
x x + 7
1 + --
7
$$\frac{2 x}{x^{2} + 7} + \frac{\frac{1}{7} \sqrt{7}}{\frac{x^{2}}{7} + 1}$$
/ 2 ___\
| 2*x x*\/ 7 |
2*|1 - ------ - -------|
| 2 2|
\ 7 + x 7 + x /
------------------------
2
7 + x
$$\frac{2 \left(- \frac{2 x^{2}}{x^{2} + 7} - \frac{\sqrt{7} x}{x^{2} + 7} + 1\right)}{x^{2} + 7}$$
/ 3 ___ 2\
| ___ 8*x 4*\/ 7 *x |
2*|- \/ 7 - 6*x + ------ + ----------|
| 2 2 |
\ 7 + x 7 + x /
---------------------------------------
2
/ 2\
\7 + x /
$$\frac{2 \left(\frac{8 x^{3}}{x^{2} + 7} + \frac{4 \sqrt{7} x^{2}}{x^{2} + 7} - 6 x - \sqrt{7}\right)}{\left(x^{2} + 7\right)^{2}}$$
/ 3 ___ 2\
| ___ 8*x 4*\/ 7 *x |
2*|- \/ 7 - 6*x + ------ + ----------|
| 2 2 |
\ 7 + x 7 + x /
---------------------------------------
2
/ 2\
\7 + x /
$$\frac{2 \left(\frac{8 x^{3}}{x^{2} + 7} + \frac{4 \sqrt{7} x^{2}}{x^{2} + 7} - 6 x - \sqrt{7}\right)}{\left(x^{2} + 7\right)^{2}}$$