Integral de exp(p*(-i)*x)*a/(a^2+x^2) dx
Solución
Solución detallada
-
Vuelva a escribir el integrando:
a2+x2aex−ip=a2eipx+x2eipxa
-
La integral del producto de una función por una constante es la constante por la integral de esta función:
∫a2eipx+x2eipxadx=a∫a2eipx+x2eipx1dx
-
No puedo encontrar los pasos en la búsqueda de esta integral.
Pero la integral
∫a2+x2e−ipxdx
Por lo tanto, el resultado es: a∫a2+x2e−ipxdx
-
Añadimos la constante de integración:
a∫a2+x2e−ipxdx+constant
Respuesta:
a∫a2+x2e−ipxdx+constant
Respuesta (Indefinida)
[src]
/ /
| |
| p*(-I)*x | -I*p*x
| e *a | e
| ----------- dx = C + a* | ------- dx
| 2 2 | 2 2
| a + x | a + x
| |
/ /
∫a2+x2aex−ipdx=C+a∫a2+x2e−ipxdx
/ / pi \ / pi \ /pi*I \ / pi*I \
|- |- -- + I*Shi(a*p)|*cosh(a*p) - |- -- - I*Shi(a*p)|*cosh(a*p) + I*|---- + Chi(a*p)|*sinh(a*p) - I*|- ---- + Chi(a*p)|*sinh(a*p) for And(Or(And(Or(And(2*|arg(a)| < pi, 2*|arg(a)| != pi), 2*|arg(a)| < pi), |-pi + 2*arg(p)| < pi), And(|-pi + 2*arg(p)| = pi, 2*|arg(a)| < pi), And(|-pi + 2*arg(p)| < pi, 2*|arg(a)| < pi)), Or(And(Or(And(2*|arg(a)| < pi, 2*|arg(a)| != pi), 2*|arg(a)| < pi), |pi + 2*arg(p)| < pi), And(|pi + 2*arg(p)| = pi, 2*|arg(a)| < pi), And(|pi + 2*arg(p)| < pi, 2*|arg(a)| < pi)))
| \ 2 / \ 2 / \ 2 / \ 2 /
|
| oo
| /
| |
< | -I*p*x
| | a*e
| | --------- dx otherwise
| | 2 2
| | a + x
| |
| /
\ -oo
⎩⎨⎧−(−iShi(ap)−2π)cosh(ap)−(iShi(ap)−2π)cosh(ap)−i(Chi(ap)−2iπ)sinh(ap)+i(Chi(ap)+2iπ)sinh(ap)−∞∫∞a2+x2ae−ipxdxfor((((2∣arg(a)∣<π∧2∣arg(a)∣=π)∨2∣arg(a)∣<π)∧∣2arg(p)−π∣<π)∨(∣2arg(p)−π∣=π∧2∣arg(a)∣<π)∨(∣2arg(p)−π∣<π∧2∣arg(a)∣<π))∧((((2∣arg(a)∣<π∧2∣arg(a)∣=π)∨2∣arg(a)∣<π)∧∣2arg(p)+π∣<π)∨(∣2arg(p)+π∣=π∧2∣arg(a)∣<π)∨(∣2arg(p)+π∣<π∧2∣arg(a)∣<π))otherwise
=
/ / pi \ / pi \ /pi*I \ / pi*I \
|- |- -- + I*Shi(a*p)|*cosh(a*p) - |- -- - I*Shi(a*p)|*cosh(a*p) + I*|---- + Chi(a*p)|*sinh(a*p) - I*|- ---- + Chi(a*p)|*sinh(a*p) for And(Or(And(Or(And(2*|arg(a)| < pi, 2*|arg(a)| != pi), 2*|arg(a)| < pi), |-pi + 2*arg(p)| < pi), And(|-pi + 2*arg(p)| = pi, 2*|arg(a)| < pi), And(|-pi + 2*arg(p)| < pi, 2*|arg(a)| < pi)), Or(And(Or(And(2*|arg(a)| < pi, 2*|arg(a)| != pi), 2*|arg(a)| < pi), |pi + 2*arg(p)| < pi), And(|pi + 2*arg(p)| = pi, 2*|arg(a)| < pi), And(|pi + 2*arg(p)| < pi, 2*|arg(a)| < pi)))
| \ 2 / \ 2 / \ 2 / \ 2 /
|
| oo
| /
| |
< | -I*p*x
| | a*e
| | --------- dx otherwise
| | 2 2
| | a + x
| |
| /
\ -oo
⎩⎨⎧−(−iShi(ap)−2π)cosh(ap)−(iShi(ap)−2π)cosh(ap)−i(Chi(ap)−2iπ)sinh(ap)+i(Chi(ap)+2iπ)sinh(ap)−∞∫∞a2+x2ae−ipxdxfor((((2∣arg(a)∣<π∧2∣arg(a)∣=π)∨2∣arg(a)∣<π)∧∣2arg(p)−π∣<π)∨(∣2arg(p)−π∣=π∧2∣arg(a)∣<π)∨(∣2arg(p)−π∣<π∧2∣arg(a)∣<π))∧((((2∣arg(a)∣<π∧2∣arg(a)∣=π)∨2∣arg(a)∣<π)∧∣2arg(p)+π∣<π)∨(∣2arg(p)+π∣=π∧2∣arg(a)∣<π)∨(∣2arg(p)+π∣<π∧2∣arg(a)∣<π))otherwise
Piecewise((-(-pi/2 + i*Shi(a*p))*cosh(a*p) - (-pi/2 - i*Shi(a*p))*cosh(a*p) + i*(pi*i/2 + Chi(a*p))*sinh(a*p) - i*(-pi*i/2 + Chi(a*p))*sinh(a*p), (((2*Abs(arg(a)) < pi)∧(Abs(pi + 2*arg(p)) = pi)))∨((2*Abs(arg(a)) < pi)∧(Abs(pi + 2*arg(p)) < pi))∨((Abs(pi + 2*arg(p)) < pi)∧((2*Abs(arg(a)) < pi)∨((2*Abs(arg(a)) < pi)∧(Ne(2*Abs(arg(a), pi))))))∧(((2*Abs(arg(a)) < pi)∧(Abs(-pi + 2*arg(p)) = pi)))∨((2*Abs(arg(a)) < pi)∧(Abs(-pi + 2*arg(p)) < pi))∨((Abs(-pi + 2*arg(p)) < pi)∧((2*Abs(arg(a)) < pi)∨((2*Abs(arg(a)) < pi)∧(Ne(2*Abs(arg(a), pi))))))), (Integral(a*exp(-i*p*x)/(a^2 + x^2), (x, -oo, oo)), True))
Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.