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