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MathGroup Archive 2005

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Re: Num. integration problem in Mathematica

  • To: mathgroup at smc.vnet.net
  • Subject: [mg53805] Re: Num. integration problem in Mathematica
  • From: "Astanoff" <astanoff at yahoo.fr>
  • Date: Fri, 28 Jan 2005 02:43:50 -0500 (EST)
  • References: <ctahqm$apt$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Antonio Cardoso wrote:
> Hello, I'm trying to solve this numerical integration in Mathematica:
[...]

in = s^0.5*BesselK[1,s^0.5/Ma]*(3/(4*Pi))*(Ma*m1/v^2)*
yt^2*((x-1-
aL)*(x-2*aQ)/(x*(x-aH)^2))*(((1+aL-x)^2-4*aL)*(1-4*
aQ/x))^0.5*(1/y^2);
Sum[NIntegrate[in,{y, y1, y1+0.1}],{y1, 0, 0.9, 0.1}]
 
23573.6


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