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Re: Numerical/analytical integration around a pole

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  Re: Numerical/analytical integration around a pole "A. Lapraitis" <ffcitatos@gmail.com> - 2011-05-12 08:31 +0000
    Re: Numerical/analytical integration around a pole Peter Pein <petsie@dordos.net> - 2011-05-15 11:05 +0000

#2311 — Re: Numerical/analytical integration around a pole

Thanks to Gary Wardall and Murray Eisenberg for quick responses.

I forgot to say I was having the problem on 7.0.1.0 on Linux x86
(64-bit). Since people are not experiencing the strange behaviour on
v8, it is fair to conclude that the bug got fixed.

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#2397

Am 12.05.2011 10:31, schrieb A. Lapraitis:
> Thanks to Gary Wardall and Murray Eisenberg for quick responses.
> 
> I forgot to say I was having the problem on 7.0.1.0 on Linux x86
> (64-bit). Since people are not experiencing the strange behaviour on
> v8, it is fair to conclude that the bug got fixed.
> 

And while using Version 7, try to Rationalize[..,0] the integrand in
Integrate:

In[2]:= Through[{Composition[N,Integrate],NIntegrate}
                  [1/(Rationalize[y[x],0]+I/1000),{x,1/2,7/10}]]
Out[2]= {0.323456-3.37701 I,0.323456-3.37701 I}

but this lasts a little while.

Peter

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