NIntegrate
- To: mathgroup at smc.vnet.net
- Subject: [mg36508] NIntegrate
- From: "Rob_jack" <rob_jackNSP at libero.it>
- Date: Tue, 10 Sep 2002 06:24:36 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Hello! I've this problem with NIntegrate: ********************************************** In[1]=f[y_,z_]: = (y^4/( (1+(8.44*10^-4)^2 * (1+z)^2 y^2) (Exp[z]+1) ) In[2]=F[z_]: = NIntegrate[f[y,z], {z, 0, Infinity} ********************************************** Mathematica 4.0 says: **************************************************************************** * NIntegrate: : inum : Integrand 1.07577/( 1+7.12336*10^-7 (1. + z)^2 ) is not numerical at {y}={1.}. **************************************************************************** ** What is it?? Thanks in advance -- Rob_jack