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+//Scilab Code for Example 7.15 of Signals and systems by

+//P.Ramakrishna Rao

+//Plotting the impulse and step responses

+clc;

+clear;

+syms s t R L;

+Y1=(1/s)-(1/(s+(R/L)));

+disp(Y1,'Laplace Transform Of differential Equation is:')

+y1=ilaplace(Y1,s,t);

+disp(y1,'The Step Response of the System is:');

+//Taking R/L=1;

+for k=0:10;

+    y1(k+1)=1-exp(-k);

+end

+k=0:10;

+plot(k,y1);

+title('System Response to Step input');

+Y2=(1/(s+(R/L)));

+disp(Y2,'Laplace Transform Of differential Equation is:')

+y2=ilaplace(Y2,s,t);

+disp(y2,'The Impulse Response of the System is:');

+for k=0:10;

+    y2(k+1)=exp(-k);

+end

+figure(1);

+k=0:10;

+plot(k,y2);

+title('System Response to impulse input');