Mathematica 9 is now available
Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
2006
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*November
*December
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 2006

[Date Index] [Thread Index] [Author Index]

Search the Archive

NIntegrate that upper limit is infinite

  • To: mathgroup at smc.vnet.net
  • Subject: [mg71869] NIntegrate that upper limit is infinite
  • From: "Evanescence" <origine26 at yahoo.com.tw>
  • Date: Fri, 1 Dec 2006 06:22:27 -0500 (EST)

Dear all:
My question is as follows:
First I definite a function that is:
G[a_]=((-(a-Cos[0.5])^(-3/2))/(3*(10)^2))*(Sin[0.5])^(2)+(1/1-0.1*0.1)*(-(0.005*(1+Cos[0.5])+0.001/1000)*(1+Cos[0.5])^(1/2)*(ArcTan[(a-Cos[0.5])^(1/2)/-(1+Cos[0.5])^(1/2)]-Pi/2)+(0.005*(1-Cos[0.5])-0.001/1000)*(1-Cos[0.5])^(1/2)*(-ArcTanh[(1-Cos[0.5])^(1/2)/(a-Cos[0.5])^(1/2)])


another function is:
P[a_]=Re[N[LegendreP[(-1/2)+i,a]]]       where i =(-1)^(1/2)

then
NIntegrate[G[a]*P[a],{a,1,infinite}]
but get the error message such that I do not get the correct answer
so,please solve my confuse,thank you!

Evanescence 2006/12/1


  • Prev by Date: Re: Drawing function with 3 variables in a graph
  • Next by Date: Re: Drawing function with 3 variables in a graph
  • Previous by thread: Re: Drawing function with 3 variables in a graph
  • Next by thread: Re: NIntegrate that upper limit is infinite