[GiNaC-list] Simple question about how to solve for a simple non-linear system of equations.
David Narvaez
david.narvaez at computer.org
Sun Jan 6 16:55:18 CET 2013
On Fri, Jan 4, 2013 at 6:16 PM, Zach <refinedcode at gmail.com> wrote:
>
> Hi guys I know this is a really basic question but after looking at the
> tutorial and reference I couldn't quite figure out how to solve a nonlinear
> system of equations. (If this is even possible, I dont know).
>
> I have this:
>
>
>> lst eqns, vars;
>>
>> eqns = D==pow(T,2);
>>
>> vars =T;
>>
>> ex L = lsolve(eqns,vars);
>
>
> But lsolve (I guess the l for linear makes it obvious) cannot solve this
> nonlinear function. Is there another way I can accomplish this? Then I
> could do something like:
> ex ans = L.subs(lst(D==3)); like I would for a linear? Is this even
> possible? Thanks for any answer! Ginac is a great tool for me so far!
If you are aiming to 2nd degree equations, I recently posted something
you could find useful
http://www.cebix.net/pipermail/ginac-list/2012-December/001932.html
David E. Narváez
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