- #1
eljose
- 492
- 0
Let,s suppose we have the integral:
[tex]\int_{-\infty}^{\infty}dxF(x) [/tex]
but unfortunately we have a problem..the function F(x) has several poles of integer order r (r=1,2,3,4...) so it diverges :uhh: :uhh: :uhh: then my question is if there is a form to redefine our integral so it can be assigned a finite value by "eliminating" somehow its poles considering them as residues so finally we have an integral:
[tex] \int_{-\infty}^{\infty}dxF(x)+ Res(F) [/tex] where the integral is
finite and Res(F) would be the sum of the residues of F(x) at its poles...or something similar..pehaps with the "Cauchy principal value integral"?...
[tex]\int_{-\infty}^{\infty}dxF(x) [/tex]
but unfortunately we have a problem..the function F(x) has several poles of integer order r (r=1,2,3,4...) so it diverges :uhh: :uhh: :uhh: then my question is if there is a form to redefine our integral so it can be assigned a finite value by "eliminating" somehow its poles considering them as residues so finally we have an integral:
[tex] \int_{-\infty}^{\infty}dxF(x)+ Res(F) [/tex] where the integral is
finite and Res(F) would be the sum of the residues of F(x) at its poles...or something similar..pehaps with the "Cauchy principal value integral"?...