initial commit / add all books

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diff --git a/2294/CH7/EX7.22/EX7_22.sce b/2294/CH7/EX7.22/EX7_22.sce
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+//Example 7.22

+//Find the laplace transform .

+clc;

+t=-10:.01:10;

+for i=1:length(t)

+    y(i)=exp(-t(i))-2*exp(-2*t(i))+exp(-3*t(i));

+    x(i)=exp(-0.5*t(i));

+end

+s=%s;

+numfs1=1;

+denfs1=s+0.5;

+fs=syslin('c',numfs1/denfs1);

+numfs2=2;

+denfs2=(s+1)*(s+2)*(s+3);

+fs1=syslin('c',numfs2/denfs2);

+hs=fs1/fs;

+hs1=csim('impulse',t,hs);

+subplot(3,1,1);

+plot2d(t,x,2);

+xtitle('Phrasing');

+xgrid;

+subplot(3,1,2);

+plot2d(t,y,3);

+xtitle('Phrasing');

+xgrid;

+subplot(3,1,3);

+plot2d(t,hs1,1);

+xtitle('Solution');

+xgrid;

+disp(fs,'fs=:');

+disp(fs1,'fs1=:');

+disp(hs,'hs=:');