Community Tip - Did you get an answer that solved your problem? Please mark it as an Accepted Solution so others with the same problem can find the answer easily. X
For x,y kind of dataset, it is required to perform numerical integration w.r.t. x'.
The italiczied P represents Cauchy's Principal Value. Limits are from 0 to infinity.
It was first tried to approximate the x,y data by combination of mathematical functions but did
not succeed as the data can not be modeled so easily and exactly.
Apologies for not putting very clear image. I do not find any clue how to proceed on it. Thanks.