Re: number dot (with space)

*To*: mathgroup at smc.vnet.net*Subject*: [mg99803] Re: [mg99773] number dot (with space)*From*: "David Park" <djmpark at comcast.net>*Date*: Fri, 15 May 2009 04:16:58 -0400 (EDT)*References*: <1115920.1242279927107.JavaMail.root@n11>

It's an approximate (or real) number. The same as -1.0 multiplying g. The space indicates the multiplication. You might not expect it to be there at all so that you would get (g + r)^4. You could probably get that if you used Rationalize on the expression. Better yet, don't introduce approximate numbers, numbers that have a decimal point, into your integration at all. Use exact integer or rational numbers if possible. Once you introduce an approximate number the entire calculation will be done with approximate numbers. David Park djmpark at comcast.net http://home.comcast.net/~djmpark/ From: Emin Gahramanov [mailto:emin.gahramanov at deakin.edu.au] Hi guys, sorry for the silly question (I am a Mathematica dummy). I have integrated out an expression, and I do not know how to interpret the term like this: (-1. g + r)^4) What throws me off is "1. g" (g is a parameter), what is that dot after one and there is also a SPACE after the dot and before "g" symbol. Sometimes I get smth. like "1. r" what is that supposed to mean? If r=2, then how to interpret the latter? Is it 1.2?? Or? Thanks.