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# ex5_2 - axis[0 5000-90 0 xlabel'Frequency(rad/sec...

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% Example 5.2 RC = 0.001; w = 0:50:5000; H = (1/RC)./(j*w+1/RC); magH = abs(H); angH = 180*angle(H)/pi; clf subplot(211),plot(w,magH) title('Example 5.2') xlabel('Frequency (rad/sec)') ylabel('|H|') % the following adds lines that identify the points % where |H|=.707 and |H|=.316. hold on plot([800 1000],[.707 .707],'r:',... [2500 3000],[.316 .316],'r:',... [1000 1000],[0 .707],'r:',... [3000 3000],[0 .316],'r:'); hold off text(200,.707,'0.707') text(1800,.316,'0.316') t subplot(212),plot(w,angH);
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Unformatted text preview: axis([0 5000 -90 0]) xlabel('Frequency (rad/sec)') ylabel('Angle(H), degrees') % the following adds lines to identify the values at % 1000 and 3000 rad/sec hold on plot([800 1000],[-45 -45],'r:',. .. [2500 3000],[-71.6 -71.6],'r:',. .. [1000 1000],[-90 -45],'r:',. .. [3000 3000],[-90 -71.6],'r:'); hold off text(400,-45,'-45') text(1800,-72,'-71.6') subplot(111) pause disp('The commands to compute and plot y(t)') disp(' are given in the m-file fig5_3.m.')...
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