Re: Matrix questions
- To: mathgroup at smc.vnet.net
- Subject: [mg109453] Re: Matrix questions
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Tue, 27 Apr 2010 08:28:31 -0400 (EDT)
- Reply-to: hanlonr at cox.net
1. Control+Return adds a row (or Menu: Insert / Table/Matrix / Add Row), Control +comma (or Menu: Insert / Table/Matrix / Add Column) adds a column 2. Menu : Mathematica / Preferences ... / Appearance / Syntax Coloring / Other / Comments 3. mff = Array[Subscript[a, ##] &, {3, 3}]; (mfg = mff) // MatrixForm Det[mff] == Det[mfg] True Bob Hanlon ---- "S. B. Gray" <stevebg at ROADRUNNER.COM> wrote: ============= 1. I don't get how to use AddRow. I think I remember that there was a one-key way to add a row or column. 2. How do I change the color of comments? 3. How can I make Det[mfg] appear in expanded form like Det[mff] does? mff = Array[Subscript[a, ##] &, {3, 3}]; mfg = MatrixForm[mff]; Det[mff] Det[mfg] I haven't used Mathematica for several years and am using it again. Thanks for any tips. Steve Gray