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create a transfer function model and plot its frequency response.

h = tf([10,21],[1,1.4,26]); 
bodeplot(h)

display the peak response on the plot.

right-click anywhere in the figure and select characteristics > peak response from the menu.

a marker appears on the plot indicating the peak response. horizontal and vertical dotted lines indicate the frequency and magnitude of that response. the other menu options add other system characteristics to the plot.

click the marker to view the magnitude and frequency of the peak response in a datatip.