Re: transpose

*To*: mathgroup at smc.vnet.net*Subject*: [mg55691] Re: [mg55673] transpose*From*: "David Park" <djmp at earthlink.net>*Date*: Sun, 3 Apr 2005 05:50:59 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

Paul, solution = Solve[i == e/r, r] resistance[e_, i_] = r /. Part[solution, 1] giving... {{r -> e/i}} e/i resistance[5.0, 2.3] 2.17391 Notice the double equal sign in the equation. If you are a newbie I recommend taking some time to work through most of Part I of The Mathematica Book, actually typing in commands and seeing that they evaluate properly. This will give you a good idea of how Mathematica works, the syntax and at least the basic commands available. This will save a lot of time in the long run. David Park djmp at earthlink.net http://home.earthlink.net/~djmp/ From: Paul [mailto:p3aul1 at cox.net] To: mathgroup at smc.vnet.net I am a newbie with a simple question. I have an equation: i = e/r I want to solve the equation for r or e(it doesn't matter which), symbolicaly. I know this is a difficult equation ;), but by starting simply I can figure out others. Thanks, Paul