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diff --git a/29/CH7/EX7.19.3/exa7_19_3.sce b/29/CH7/EX7.19.3/exa7_19_3.sce
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+//caption:stability_using_bode_plot
+//example 7.19.3
+//page 283
+s=%s;
+g=(48*(s+10))/(s*(s+20)*(s^2+2.4*s+16));
+G=syslin('c',g)
+fmin=0.01; 
+fmax=100; 
+bode(G, fmin, fmax) 
+show_margins(G)
+gm=g_margin(G)
+pm=p_margin(G)
+disp(gm,"gain_margin=");
+disp(pm,"phase_margin=");
+disp("since gain and phase margin are both positive so system is stable")
+\ No newline at end of file