* *************************************************
* To define a piecewise linear function and plot it
* *************************************************

u = @(t) ((t>=0)*1.0);

w = @(t, a, b) (u(t - a) - u(t - b))

x = @(t) (w(t,-1,0).*(-1-t) + w(t,0,1).*t + w(t,1,2).*1.0 + w(t,2,3).*(3-t))

figure

tvec = -3:0.025:5;

plot(tvec, x(tvec), 'b', tvec, x(-2*tvec-1), 'r');
ylim([-1.5 1.5]);





* *****************************************
* To define a function x(t) = sin(5*t)
* *****************************************

x = @(t) (sin(5*t))

tvec = -1:0.05:4;

plot(tvec, x(tvec), 'b', tvec, h(3-tvec), 'r', 0, 0, 'ok', 3, 0, 'ok'), ylim([-1.5 1.5])

* *****************************************




I = eye(4);


"**** Q1*******"
z = 3.5e4;
y = 4;
y
y = z;
y
"*************"
""


hello