Re: Solving linear systems in matrix notation?
- To: mathgroup at smc.vnet.net
- Subject: [mg68233] Re: [mg68187] Solving linear systems in matrix notation?
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Sun, 30 Jul 2006 04:47:58 -0400 (EDT)
- Reply-to: hanlonr at cox.net
- Sender: owner-wri-mathgroup at wolfram.com
Solve[{2x + 4y == -4, 5x + 7y == 11}, {x, y}] {{x -> 12, y -> -7}} Solve[{{2,4},{5,7}}.{x,y}=={-4,11},{x,y}] {{x -> 12, y -> -7}} Solve[{{2,4,-4},{5,7,11}}.{x,y,-1}==0,{x,y}] {{x -> 12, y -> -7}} LinearSolve[{{2,4},{5,7}},{-4,11}] {12,-7} LinearSolve[{{2,4},{5,7}}][{-4,11}] {12,-7} Bob Hanlon ---- Ben <ben.carbery at spam.me> wrote: > Hi, > > I have been following a tutorial that says to solve systems of linear equations like so: > > Solve[{2x + 4y == -4, 5x + 7y == 11}, {x, y}] > > I am wondering if there is a shorthand way to do it by just entering the co-efficients of each equation, i.e. matrix style: > > Solve??[{2,4,-4},{5,7,11}] > > cheers, > > Ben C. >