- #1
Wishe Deom
- 12
- 0
Hello,
I am having difficulty solving the following integral:
[tex]
\int^{\infty}_{-\infty}e{-(a|x|+ikx)}dx
[/tex]
I have tried to use an explicit form of the absolute, eg.
[tex]
-(a|x|+ikx) = \left\{\stackrel{-(ik+a)x\ x>0} {-(ik-a)\ x<0}
[/tex]
Does this allow me to separate the integral into a sum of two integrals?[tex]
\int^{0}_{-\infty}e{-(ik+a)x}dx+\int^{\infty}_{0}e{-(ik+a)x}dx
[/tex]
This was my best guess, but the result I got did not converge, so either I did the integral improperly, or else this is not a legal method.
Would someone be so kind as to share their knowledge?
I am having difficulty solving the following integral:
[tex]
\int^{\infty}_{-\infty}e{-(a|x|+ikx)}dx
[/tex]
I have tried to use an explicit form of the absolute, eg.
[tex]
-(a|x|+ikx) = \left\{\stackrel{-(ik+a)x\ x>0} {-(ik-a)\ x<0}
[/tex]
Does this allow me to separate the integral into a sum of two integrals?[tex]
\int^{0}_{-\infty}e{-(ik+a)x}dx+\int^{\infty}_{0}e{-(ik+a)x}dx
[/tex]
This was my best guess, but the result I got did not converge, so either I did the integral improperly, or else this is not a legal method.
Would someone be so kind as to share their knowledge?
Last edited: