1
---------------
________
/ 2
/ x
3* / 1 - --
\/ 9
$$\frac{1}{3 \sqrt{1 - \frac{x^{2}}{9}}}$$
x
--------------
3/2
/ 2\
| x |
27*|1 - --|
\ 9 /
$$\frac{x}{27 \left(1 - \frac{x^{2}}{9}\right)^{\frac{3}{2}}}$$
2
x
3 + ------
2
x
1 - --
9
--------------
3/2
/ 2\
| x |
81*|1 - --|
\ 9 /
$$\frac{\frac{x^{2}}{1 - \frac{x^{2}}{9}} + 3}{81 \left(1 - \frac{x^{2}}{9}\right)^{\frac{3}{2}}}$$