Re: SetOptions with Column

*To*: mathgroup at smc.vnet.net*Subject*: [mg64505] Re: SetOptions with Column*From*: "Rob" <box2718-news at yahoo.com>*Date*: Sun, 19 Feb 2006 05:36:20 -0500 (EST)*References*: <dt6kla$ng2$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

My goal is to show algebraic manipulations. I might have a problem like, "show that the derivative of f(x)=x is f'(x)=1 using the definition of the derivative," and I need to write something like, (excuse the hybrid notation) f'(x_0)=lim_(x->x_0) (x-x_0)/(x-x_0) = lim_(x->x_0) 1 = 1 My goal is to get equals signs to line up. Unfortunately a major part of the homework is demonstrating to the grader that I can do algebraic manipulations like that, so a format like the above would be very helpful. Rob "David Park" <djmp at earthlink.net> wrote in message news:dt6kla$ng2$1 at smc.vnet.net... > Rob, > > I don't understand your equation, but do you mean something like this? > > (eqns = {a == x y, a == u/v}) // TableForm > > or do you mean a Piecewise function, which is formatted for you? > > Generally I wouldn't think it is worth detailed formatting of a GridBox > for > a homework assignment. > > David Park > djmp at earthlink.net > http://home.earthlink.net/~djmp/ > > From: Rob Munger [mailto:rob.munger at yahoo.com] To: mathgroup at smc.vnet.net > > > > Hello, all, > > I am trying to use Mathematica to typeset homework assignments. I'm trying > to use GridBoxes to format multi-line equations of the following sort: > a = b > = c > = d > = e > = f > Because I use formulas like this a lot, it would be nice if I could get > Mathematica to make the default alignment for the columns of GridBoxes to > be > "Left," instead of "Center." However, when I try to use SetOptions to > accomplish this, I get: > > In: > SetOptions[GridBox,ColumnAlignments->{Left}] > Options[GridBox,ColumnAlignments] > > Out: > {ColumnAlignments->{Center}} > > In: > SetOptions[GridBox,ColumnAlignments->Left] > Options[GridBox,ColumnAlignments] > > Out: > {ColumnAlignments->{Center}} > > My Mathematica abilities are somewhat limited, so I have no idea what is > going wrong (or going write, as the case may be). Using Unprotect didn't > help. > > Any ideas? > > I'm using Mathematica 5.1.0.0 on WinXP. > > Rob > >