Re: NIntegrate a list

*To*: mathgroup at smc.vnet.net*Subject*: [mg52969] Re: [mg52940] NIntegrate a list*From*: Sseziwa Mukasa <mukasa at jeol.com>*Date*: Sat, 18 Dec 2004 03:59:43 -0500 (EST)*References*: <200412171019.FAA16101@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

On Dec 17, 2004, at 5:19 AM, Aaron Fude wrote: > Hi, > > I can Integrate this, but apparently not NIntegrate this: > > Integrate[x*Sin[x]*{1, 2}, {theta, -Pi, Pi}] > > but not > > NIntegrate[x*Sin[x]*{1, 2}, {theta, -Pi, Pi}] > > Is there a good way to do this (w/o writing loops)? > > Many thanks! It's not clear what you are trying to do. The first expression is equivalent to x Sin[x] {1,2} Integrate[1,{theta,-Pi,Pi}] is that really what you meant? Or did you mean Integrate[theta Sin[theta] {1,2},{theta,-Pi,Pi}]? Anyway x Sin[x] is not a numeric expression and NIntegrate works only on numeric expressions. Regards, Ssezi

**References**:**NIntegrate a list***From:*"Aaron Fude" <aaronfude@yahoo.com>