Integral de exp^(-a*x)*cosb*x dx
Solución
Respuesta (Indefinida)
[src]
// -a*x \
||(-cos(b) - a*x*cos(b))*e 2 |
/ ||---------------------------- for a != 0|
| || 2 |
| -a*x || a |
| E *cos(b)*x dx = C + |< |
| || 2 |
/ || x *cos(b) |
|| --------- otherwise |
|| 2 |
\\ /
∫xe−axcos(b)dx=C+{a2(−axcos(b)−cos(b))e−ax2x2cos(b)fora2=0otherwise
/ -cos(b) pi
| -------- for |arg(a)| < --
| 2 2
| a
|
| 0
< /
| |
| | -a*x
| | x*cos(b)*e dx otherwise
| |
|/
\oo
⎩⎨⎧−a2cos(b)∞∫0xe−axcos(b)dxfor∣arg(a)∣<2πotherwise
=
/ -cos(b) pi
| -------- for |arg(a)| < --
| 2 2
| a
|
| 0
< /
| |
| | -a*x
| | x*cos(b)*e dx otherwise
| |
|/
\oo
⎩⎨⎧−a2cos(b)∞∫0xe−axcos(b)dxfor∣arg(a)∣<2πotherwise
Piecewise((-cos(b)/a^2, Abs(arg(a)) < pi/2), (Integral(x*cos(b)*exp(-a*x), (x, oo, 0)), True))
Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.