Exemplo:
octave:7> mat=['CH3COOH = H+ + CH3COO-';'H2O = H+ + OH-'];
octave:8> eks=[1.78e-5,1.8e-16];
octave:9> esps=['CH3COOH';'H+';'CH3COO-';'H2O';'OH-'];
octave:10> cis=[0.01,0,0,55.346,0];
octave:11> res=sistema(mat,esps,eks,cis,1e-8)
res =
9.5869e-03 4.1309e-04 4.1308e-04 5.5346e+01 6.4431e-09