initial commit / add all books

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diff --git a/46/CH5/EX5.1/Example5_1.sce b/46/CH5/EX5.1/Example5_1.sce
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+//Example 5.1

+tau=0.1;//min

+xs=90;//degrees

+A=10;//degrees

+Y_inf=10;//degrees

+Y_t=8;//degrees

+//Substituting into Eq.(5.12) the appropriate values of Y_t,A,and tau gives

+t=-0.1*logm(1-(Y_t/A));//min

+disp('min',t,'time=')
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diff --git a/46/CH5/EX5.2/Example5_2.sce b/46/CH5/EX5.2/Example5_2.sce
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+//Example 5.2

+clear

+clc

+tau=0.1;//min

+xs=100;//Fahrenheit

+ys=100;//Fahrenheit

+A=2;//Fahrenheit

+f=10/%pi;//cycles/min

+w=2*%pi*f;//rad/min

+//From Eq.(5.25), the amplitude of the response and the phase angle are calculated;thus

+disp('Fahrenheit',A/sqrt((tau*w)^2+1),'A/sqrt((tau*w)^2+1)=')

+phi=atan(-w*tau);//radians

+phi=phi*180/%pi;//degrees

+disp('degrees',phi,'phase lag=')

+t=0:0.01:1;

+//From Eq.(5.19), the input of the thermometer is  therefore

+disp("X(t)=2*sin(20*t)");

+//or

+xt=xs+2*sin(20*t);

+//The response of the thermometer is therefore

+disp("Y(t)=0.8944*sin(20*t-63.4349)")

+//or

+yt=ys+0.8944*sin(20*t-63.4349);

+Lag=phi/(360*f);//min

+Lag=abs(Lag);//min

+disp('min',Lag,'Lag=')

+clf;

+plot(t,yt)

+plot(t,xt)

+xlabel('time')

+ylabel('x(t) , y(t)')

+title('x(t) , y(t) Vs time')

+xgrid

+

+

diff --git a/46/CH5/EX5.2/figure5_2.jpg b/46/CH5/EX5.2/figure5_2.jpg
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