/ 2 \ / 2 \
\1 + a + 2*a/*|-1 + a + -----|
\ 1 + a/
-------------------------------
2
1 + a
$$\frac{1}{a^{2} + 1} \left(a - 1 + \frac{2}{a + 1}\right) \left(a^{2} + 2 a + 1\right)$$
(1.0 + a^2 + 2.0*a)*(-1.0 + a + 2.0/(1.0 + a))/(1.0 + a^2)
Рациональный знаменатель
[src] / 2 \
(2 + (1 + a)*(-1 + a))*\1 + a + 2*a/
-------------------------------------
/ 2\
(1 + a)*\1 + a /
$$\frac{1}{\left(a + 1\right) \left(a^{2} + 1\right)} \left(\left(a - 1\right) \left(a + 1\right) + 2\right) \left(a^{2} + 2 a + 1\right)$$
Объединение рациональных выражений
[src](1 + a*(2 + a))*(2 + (1 + a)*(-1 + a))
--------------------------------------
/ 2\
(1 + a)*\1 + a /
$$\frac{1}{\left(a + 1\right) \left(a^{2} + 1\right)} \left(a \left(a + 2\right) + 1\right) \left(\left(a - 1\right) \left(a + 1\right) + 2\right)$$
/ 2 \ / 2 \
\1 + a + 2*a/*|-1 + a + -----|
\ a + 1/
-------------------------------
2
1 + a
$$\frac{1}{a^{2} + 1} \left(a - 1 + \frac{2}{a + 1}\right) \left(a^{2} + 2 a + 1\right)$$
/ 2 \ / 2 \
|a - 1 + -----|*\a + 2*a + 1/
\ a + 1/
------------------------------
2
a + 1
$$\frac{1}{a^{2} + 1} \left(a - 1 + \frac{2}{a + 1}\right) \left(a^{2} + 2 a + 1\right)$$