/ -a
|1 e
|- - --- for And(a > -oo, a < oo, a != 0)
$$\begin{cases} \frac{1}{a} - \frac{e^{- a}}{a} & \text{for}\: a > -\infty \wedge a < \infty \wedge a \neq 0 \\1 & \text{otherwise} \end{cases}$$
/ -a
|1 e
|- - --- for And(a > -oo, a < oo, a != 0)
$$\begin{cases} \frac{1}{a} - \frac{e^{- a}}{a} & \text{for}\: a > -\infty \wedge a < \infty \wedge a \neq 0 \\1 & \text{otherwise} \end{cases}$$
Ответ (Неопределённый)
[src] / // -a*x \
| ||-e |
| -a*x ||------- for a != 0|
| e dx = C + |< a |
| || |
/ || x otherwise |
\\ /
$$\int e^{- a x}\, dx = C + \begin{cases} - \frac{e^{- a x}}{a} & \text{for}\: a \neq 0 \\x & \text{otherwise} \end{cases}$$