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+//Scilab Code for Example 7.25 of Signals and systems by
+//P.Ramakrishna Rao
+//Plotting the impulse and step responses
+clc;
+clear;
+syms z a n;
+Y1=(2*z/(z-a));
+disp(Y1,'Z Transform Of differential Equation is:')
+y12=2*a^n;
+disp(y12,'The Unit Sample Response of the System is:');
+y2=2*(a^n-1)/(a-1);
+disp(y2,'The Step Response of the System is:');
+q=1;
+a=0.5;
+for k=0:0.1:5;
+y2(q)=2*((a^k-1)/(a-1));
+q=q+1;
+end
+k=0:0.1:5;
+plot(k,y2);
+
diff --git a/1592/CH7/EX7.25/Fig7_25.jpg b/1592/CH7/EX7.25/Fig7_25.jpg
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