Re: question about NIntegrate

*To*: mathgroup at smc.vnet.net*Subject*: [mg124974] Re: question about NIntegrate*From*: Bill Rowe <readnews at sbcglobal.net>*Date*: Wed, 15 Feb 2012 04:42:48 -0500 (EST)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com

On 2/14/12 at 6:38 AM, nbbienia at cyf-kr.edu.pl (Leslaw Bieniasz) wrote: >I want to use function NIntegrate to integrate a function of x that >depends on two parameters y and z. However, when I write something >of the kind: >y=10; >z=1; >NIntegrate[Exp[-(x-y)/z],{x,0,Infinity}] >I get an error: Integrand is not numerical at {x} = {1.} I don't see an error when I paste your code into a fresh session. That is: In[1]:= y = 10; z = 1; NIntegrate[Exp[-(x - y)/z], {x, 0, Infinity}] Out[3]= 22026.5 In[4]:= $Version Out[4]= 8.0 for Mac OS X x86 (64-bit) (October 5, 2011)