Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
2001
*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 2001

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

Search the Archive

Re: A tough Integral

  • To: mathgroup at smc.vnet.net
  • Subject: [mg28537] Re: [mg28521] A tough Integral
  • From: Cheng Liu <cliu at lanl.gov>
  • Date: Wed, 25 Apr 2001 19:21:46 -0400 (EDT)
  • References: <200104250530.BAA19306@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Hi, Angela,

	My Macintosh with Mathematica 4.0 gives

In[2]:=
\!\(NIntegrate[1/\((Cos[x] + x\^2)\), \ {x, \ 0, \ Infinity}]\)

Out[2]=
1.83799

Cheng


>Does anyone know how I can get the following Integral to at least 60 places,
>using Mathematica?
>
>Int(1/(cos(x)+x^2)) between x=0 and x=infinity. Both Integrate and NIntegrate
>seemed helpless.
>
>Thanks,
>Angela
>
>bobbym1953 at aol.com

-- 
====================================================
Cheng Liu, Ph.D.
MST-8, Structure/Property Relations
Materials Science and Technology Division
Los Alamos National Laboratory
Los Alamos, New Mexico 87545

Phone: 505-665-6892 (office), 505-667-9950 (lab)
Fax:   505-667-8021
email: cliu at lanl.gov
====================================================


  • Prev by Date: Mathematica and the Internet
  • Next by Date: Re: plotting Numerical solutions of a function
  • Previous by thread: A tough Integral
  • Next by thread: Re: A tough Integral