Numerical Evaluation of Principal Value Integrals

Join the discussion
Ask a follow-up here, or get your own question answered by working scientists, mathematicians and engineers — people, not an autocomplete.
Real named experts · corrections over time · the nuance an AI answer skips
1 reply · 3K views
daudaudaudau
Messages
297
Reaction score
0
Hi.

Can anyone tell me where to find information on how to evalutate a principal value integral numerically? When I say principal value, I mean an integral where a certain point is excluded from the domain of integration. In my case, the integrand is singular in this point.
 
Physics news on Phys.org
If the excluded point is at c, between a and b, then split the integral as [tex]\int^b_a f(x) dx = \int^b_{c+t} f(x) dx + \int^{c-t}_a f(x) dx[/tex] and let t --> 0.