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%  this program makes Bode plot paper for students to use
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%  plot on semilog scale
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  figure;
  orient landscape
  f = [1.4:0.1:3.0];
  plot(f,-1*ones(1,length(f)),' ','Linewidth',2);
  grid; ylabel('Magnitude (dB)');
  xlabel('Frequency (Hz)');
  axis([ min(1.4) max(3.0) 0 25]);
  
  figure
  orient landscape
  plot(f,0*ones(1,length(f)),' ','Linewidth',2);
  grid; ylabel('Phase (degrees)');
  xlabel('Frequency (Hz)');
  axis([ min(f) max(f) -180 0]);

 