Integral of plane wave equation

redtree
Messages
335
Reaction score
15
What is the integral for the following equation

(e^{}ikx)/x
 
Physics news on Phys.org
Please formulate carefully. Integral over k or x? Between what limits?
 
k is a constant. x a variable.

I figured out the answer. It's the imaginary argument of the exponential integral.
 
Glad you figured it out, I'm still guessing at what you mean :smile:
For I don't see an integral and if I add one, it doesn't evaluate to k x.
 
Sorry Chip, but instead of writing the sign for integral I simply stated that I was looking for the integral. My assumption was that you'd understand what that implied, i.e.,

\int(e^{}ikx)/x dx

where k is a constant.

The answer is can be found at the following:

http://en.wikipedia.org/wiki/Exponential_integral

under the subheading "Exponential integral of imaginary argument"

Best :cool:
 
There are two things I don't understand about this problem. First, when finding the nth root of a number, there should in theory be n solutions. However, the formula produces n+1 roots. Here is how. The first root is simply ##\left(r\right)^{\left(\frac{1}{n}\right)}##. Then you multiply this first root by n additional expressions given by the formula, as you go through k=0,1,...n-1. So you end up with n+1 roots, which cannot be correct. Let me illustrate what I mean. For this...
Back
Top