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2006 Sep 01
1
integration problem with gamma function
...a mathematica script into R. The whole script is at the end of the email (with initial values for easy reproduction) and can be pasted directly into R. The problematic part (which is included below of course) is <--- Original Mathematica ---> (* p_svbar *) UiA = Ni (Dsi - 2Di A + A^2)/2; UiiA = Nii (Dsii - 2Dii A + A^2)/2; psvbar = NIntegrate[1/(UiA^(Ni/2)) 1/(UiiA^(Nii/2)) Gamma[Ni/2,UiA/(sH^2),UiA/(sL^2)] Gamma[Nii/2,UiiA/(sH^2),UiiA/(sL^2)],{A,L,H}, MinRecursion->3]; PSVbar = psvbar/(4 Log[sH/sL]); Print["p(s?v|D_1D_2I) = const. ",N[PSVbar,6]]; </--->...