Re: simple bug about Sum/Product function?

*To*: mathgroup at smc.vnet.net*Subject*: [mg46777] Re: simple bug about Sum/Product function?*From*: "Dana DeLouis" <delouis at bellsouth.net>*Date*: Sun, 7 Mar 2004 01:34:04 -0500 (EST)*Sender*: owner-wri-mathgroup at wolfram.com

In version 5 for Windows, it works for me also up to 1,000,000. It returns unevaluated for values over that. Sum[2, {1000000}] 2000000 - - Sum[2, {1000001}] Sum[2, {1000001}] - - However, if I use NSum, I get a error no matter what the value. NSum[2, {100}] NSum::itraw : Raw object 100 cannot be used as an iteration. - - As others have mentioned, it works ok if the first item is not a "Raw Object", but an iteration variable. Sum[2, {i, 1000001}] 2000002 Dana P.S. I have no idea why no error here though. Remove[junk] - - Sum[2, {junk}] Sum[2, {junk}] - - NSum[2, {junk}] ComplexInfinity "MATUDA Yuko" <matsuda.yuko at acm.org> wrote in message news:c237r8$ie9$1 at smc.vnet.net... > Hello there, > > Try the following simple expressions in Mathematica(ver5) > > Sum[1, {1000001}] > Product[1, {1000001}] > > There are no problems in ver 4.2. > > Yuko MATSUDA