help solving signals and systems using matlab problem 148 co

help solving signals and systems using matlab

problem 1.48

cos 3000at). Ot 10ms x(t) = 0, otherwise Use MATLAB to plot the signal. 1.48 Use MATLAB to plot the signal 2r 0. 0. otherwi otherWIS

Solution

t=0:0.001:12

if t<=3

X(t)=cos(3000*pi*t);

else X(t)=0;

end

subplot(2,1,1);Plot(t,X);

t=0:0.001:5

If t<0

y(t)=2*t;

else if (t>1) && (t<3)

y(t)=(t^2-4*t+3)/2;

else

y(t)=0;

end

subplot(2,1,2); pot(t,y);