RE: What does " 1.' " mean ?

*To*: mathgroup at smc.vnet.net*Subject*: [mg66698] RE: [mg66661] What does " 1.' " mean ?*From*: "David Park" <djmp at earthlink.net>*Date*: Sat, 27 May 2006 03:52:27 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

It's an approximate number, as opposed to an exact number like 1 which would disappear. As soon as you include a decimal point in any number in an expression, Mathematica will convert the entire expression to approximate numbers. So you might see if you can eliminate the decimal points when entering an expression to NSolve. Or you might prefer to use NDSolve and get InterpolationFunctions as answers. You might want to look at Section 3.1 in The Mathematica Book on Numbers. David Park djmp at earthlink.net http://home.earthlink.net/~djmp/ From: Arkalen [mailto:skizzir at yahoo.com] To: mathgroup at smc.vnet.net Warning : I am a complete newbie at using Mathematica. I have used NSolve to solve systems of non linear equations, and it gives me results which look good except they contain several "1.'abc" where abc are parameters. (that's "one period apostrophe"). I assume it's shorthand notation for something but I can't tell what, the Mathematica experts I might ask are all gone for a week and I can't find it in the book. Anyone know what it means ?