Re: Solving linear systems in matrix notation?
- To: mathgroup at smc.vnet.net
- Subject: [mg68237] Re: [mg68187] Solving linear systems in matrix notation?
- From: "Adriano Pascoletti" <pascolet at dimi.uniud.it>
- Date: Sun, 30 Jul 2006 04:48:07 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Ben,
use LinearSolve[matrix, vector]
LinearSolve[{{2, 4}, {5, 7}}, {-4, 11}]
gives
{12, -7}
Adriano Pascoletti
Ben 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.
>