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