Re: Pseudo-Singular Integrals
- To: mathgroup at yoda.physics.unc.edu
- Subject: Re: Pseudo-Singular Integrals
- From: keiper (Jerry Keiper)
- Date: Thu, 26 May 1994 13:31:51 -0500
I don't see what the problem is. It seems to work just fine:
In[1]:= w = 10^-7;
In[2]:= NIntegrate[-PolyLog[2,-1/y]/(w+y)^4 + Log[(1-y)y/(w+y)] *
PolyLog[2,-(1-y)/y], {y, 0, 10^-5, 1},
Method -> DoubleExponential]
22
Out[2]= 5.26212 10
BTW, the second term contributes very little:
In[3]:= NIntegrate[-PolyLog[2,-1/y]/(w+y)^4, {y, 0, 10^-5, 1},
Method -> DoubleExponential]
22
Out[3]= 5.26212 10
In[4]:= %%/% - 1
Out[4]= 0.
Jerry B. Keiper
keiper at wri.com
Wolfram Research, Inc.