Subject: eliminate and difference with Mathematica ?
From: Dan Stanger
Date: Mon, 08 Dec 2003 09:42:30 -0500
First, dont call symbols c1 c2 ... cn or d1 d2 ... dn, as it conflicts with
maxima line variables.
second execute the following:
display2d:false;
eliminate([Yn = Cx0*I0 + Cx1*I1 + Cx2*I2, I2 = I3 - k1*I2/z, I3 = Xn -
k0*I1/z, I1 = I2/z + k1*I2, I0 = I1/z + k0*I3],[I0,I1,I2,I3]);
Then you will be able to cut and paste.
Vaclav Peroutka wrote:
> Hello all,
>
> I am new here (I just installed Maxima). I want to replace Wolfram
> Mathematica for simple tasks because of lack of licenses. My usage is
> mostly in digital filters design, working with equations in Z-domain etc.
>
> So I tried to to use following:
> (C7) eliminate([Yn = C0*I0 + C1*I1 + C2*I2, I2 = I3 - k1*I2/z, I3 = Xn -
> k0*I1/z, I1 = I2/z + k1*I2, I0 = I1/z + k0*I3],[I0,I1,I2,I3]);
> First I found that Maxima does not understand simple Y = k X ( or does
> it ? I need to input Y = k*X). Anyway it prints the results with this
> fashion(therefore no simple copy/paste possibility).
>
> But the main problem is that after "eliminate" it prints a lot of stuff
> (about 20 lines) which I don't understand how to use it.
>
> How can I simply get Mathematica's Yn ( ...) = Xn ( ...) ?
>
> Thanks,
> Vasek
>
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