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- function fazna_slika_duffing(a,z_0)
- %nariše fazno sliko Duffingovega oscilatorja
- F=@(z,t)[z(2); z(1)-z(1)^3-a*z(2)]; %desne strani DE
- n=size(z_0,2);
- t=linspace(0,10);
- for i=1:n
- z=lsode(F, z_0(i,:),t); %rešimo sistem z danimi začetnimi pogoji
- plot(z(1,:),z(2,:));
- hold on;
- endfor
- hold off;
- endfunction
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