/* wxMaxima 0.7.2 http://wxmaxima.sourceforge.net
Maxima 5.12.0 http://maxima.sourceforge.net
Using Lisp GNU Common Lisp (GCL) GCL 2.6.8 (aka GCL)
Distributed under the GNU Public License. See the file COPYING.
Dedicated to the memory of William Schelter.
This is a development version of Maxima. The function bug_report()
provides bug reporting information.

(%i1) display2d:false;
g:subst(-8,b,subst(2*%pi*300,a,(200*abs(mod(x,1/100)-1/200)-1/2)*(1-x/3)*2));
display2d:true;
wxplot2d([g],[x,0,3]);
g;

(%i6) kill(all);
m:matrix(
 [s*c1+s*c2+1/(s*l1)+1/(r1),-s*c2,0,0],
 [-s*c2,s*c2+1/r2,-1/r2,0],
 [0,-1/r2,1/r2,1],
 [0,0,1,0]
 );
assume(w>0);
m2:subst([r1=1,r2=10,c1=1/1000000,c2=10/1000000000,l1=1/1000],m);
m^^-1;
polarform(subst(%i*w,s,m2^^-1));
row(col(m^^-1,1),2);
submatrix(2,m2^^-1,1);
ratsimp((m^^-1) . m);

(%i9)