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## Homework Statement

x(t)=4sin(0.5t).3u(t)

x[n]=x(n2Ts)

The 1st equation, x(t)=4sin(0.5t).2u(t)

Code :

>> A=2;

>> wo=0.5;

>> t=5:0.25:50;

>> x=A*sin(wo*t).3*(t>=0);

>> plot(t,x), grid on

>> xlabel('t (s)'); ylabel('Amplitude(unit)')

But the second one,x[n]=x(n2T

_{s}), I don't know what code should I use to plot it out,pls help,thanks.

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