Integral de (x^4)*(e^(-kx)) dx
Solución
Respuesta (Indefinida)
[src]
/// 4 4 2 2 3 3\ -k*x \
||\-24 - k *x - 24*k*x - 12*k *x - 4*k *x /*e 5 |
/ ||------------------------------------------------- for k != 0|
| || 5 |
| 4 -k*x || k |
| x *E dx = C + |< |
| || 5 |
/ || x |
|| -- otherwise |
|| 5 |
\\ /
∫e−kxx4dx=C+{k5(−k4x4−4k3x3−12k2x2−24kx−24)e−kx5x5fork5=0otherwise
/ / 4 2\
| |3 3 k 3*k 3*k | -2*k
|32*|- + k + -- + --- + ----|*e
| \4 2 2 2 / pi
|----------------------------------- for |arg(k)| < --
| 5 2
| k
|
< oo
| /
| |
| | 4 -k*x
| | x *e dx otherwise
| |
| /
| 2
\
⎩⎨⎧k532(2k4+k3+23k2+23k+43)e−2k2∫∞x4e−kxdxfor∣arg(k)∣<2πotherwise
=
/ / 4 2\
| |3 3 k 3*k 3*k | -2*k
|32*|- + k + -- + --- + ----|*e
| \4 2 2 2 / pi
|----------------------------------- for |arg(k)| < --
| 5 2
| k
|
< oo
| /
| |
| | 4 -k*x
| | x *e dx otherwise
| |
| /
| 2
\
⎩⎨⎧k532(2k4+k3+23k2+23k+43)e−2k2∫∞x4e−kxdxfor∣arg(k)∣<2πotherwise
Piecewise((32*(3/4 + k^3 + k^4/2 + 3*k/2 + 3*k^2/2)*exp(-2*k)/k^5, Abs(arg(k)) < pi/2), (Integral(x^4*exp(-k*x), (x, 2, oo)), True))
Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.