       Re: simultaneous equations - eliminating variables and solving

• To: mathgroup at smc.vnet.net
• Subject: [mg100224] Re: simultaneous equations - eliminating variables and solving
• From: Erik Max Francis <max at alcyone.com>
• Date: Thu, 28 May 2009 06:50:51 -0400 (EDT)
• References: <gvlhv1\$dq6\$1@smc.vnet.net>

```nninja wrote:
> This is what my formula looks like sofar.
>
> Solve[{a == b + c + d, e == f + g + c + 2 d, h == c/(b*g),
>   i == d/(c*g), h*i == d/(b*g^2), j == m*g/f, k == l*m,
>   n + m + b + c == g + l}, {g}]
>
> Basically, I can solve for the variable I want, but I am having trouble eliminating the ones I don't want (ie. I am getting an answer that is in terms of the wrong variables)
>
> I have been in the help files for ages, and don't really understand how to do this.
> I would really appreciate some pointers!!

Try specifying the third "elims" argument, which specifies the variables
you'd like Solve to try to eliminate when expressing the answer.

--
Erik Max Francis && max at alcyone.com && http://www.alcyone.com/max/
San Jose, CA, USA && 37 18 N 121 57 W && AIM/Y!M/Skype erikmaxfrancis
Not bad from a girl from the gutter like me
-- Kina

```

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