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 Author Comment/Response Kevin Hase 09/27/00 05:59am The following integral works in version 3 but not in version 4. The result I have given is from version 3.Why does it fail in version 4? In[1]:= Integrate[4*Pi*r^2*(Sin[\[Kappa]*r]*r*Erf[r*\[Xi]])/(\[Kappa]*r), {r, 0, Infinity}, Assumptions -> {Im[\[Kappa]] == 0, Im[\[Xi]] == 0, Re[\[Xi]] > 0, Re[\[Kappa]] > 0, \[Kappa] > 0, \[Xi] > 0}] Out[1]:= -((Pi*(\[Kappa]^4 + 2*\[Kappa]^2*\[Xi]^2 + 8*\[Xi]^4))/ (E^(\[Kappa]^2/(4*\[Xi]^2))*\[Kappa]^4*\[Xi]^4)) Version 4 gives the error: Integrate::''idiv'' : ''Integral of \!\(r\^2\\ \(\(Erf[\(\(r\\ \[Xi]\)\)]\)\)\\ \ \(\(Sin[\(\(r\\ \[Kappa]\)\)]\)\)\) does not converge on \!\({0, \ \*InterpretationBox[\''\[Infinity]\'', DirectedInfinity[1]]}\).'' My version evaluates to: In[6]:= \$Version Out[6]= ''4.0 for Microsoft Windows (July 16, 1999)'' In[5]:= \$ReleaseNumber Out[5]= 1 Thank you very much. Kevin URL: ,

 Subject (listing for 'Integrate problem in version 4') Author Date Posted Integrate problem in version 4 Kevin Hase 09/27/00 05:59am Re: Integrate problem in version 4 Forum Modera... 09/27/00 06:06am
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