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Re: How to parse equations

  • To: mathgroup at smc.vnet.net
  • Subject: [mg91631] Re: [mg91621] How to parse equations
  • From: "Adriano Pascoletti" <adriano.pascoletti at gmail.com>
  • Date: Sat, 30 Aug 2008 01:50:47 -0400 (EDT)
  • References: <200808290825.EAA24082@smc.vnet.net>

Map[Variables , eqns] gives

{{x[1], y[1], z[1]}, {u[1], x[1], z[1]}, {u[1], z[1]}, {u[1]}}


Adriano Pascoletti
2008/8/29 Stuart Nettleton <Stuart.Nettleton at uts.edu.au>

> Hi,
> I am a bit stuck on how to convert the following set of equations to a
> list of variables:
> eqns = {
>    x[1] + y[1] + z[1],
>    x[1] + 3 z[1] + u[1]^2,
>    z[1] - u[1] - 16,
>    u[1] - 5};
> to give..
> {{ x[1], y[1], z[1]},{x[1], z[1], u[1]},{z[1], u[1],}, {u[1]}}
> Any thoughts would be appreciated!
> Thanks,
> Stuart
>
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