Plotting continious-time signal

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Cagatay Aslan
Cagatay Aslan 2019-10-28
评论： Cagatay Aslan 2019-10-28
Hi, I'm a beginner in Matlab and I'd like to plot the following continious time sinusoidal x(t) = sinwt where w= pi, 3*pi/2, 2*pi. Can anybody help me how to plot this. My first attempt is as following:
t=[0:10];
subplot(2,2,1)
x1 = cos(pi*t);
plot(t,x1)
subplot(2,2,2)
x2 = cos((3*pi/2)*t);
plot(t,x2)
subplot(2,2,3)
x3 = cos(2*pi*t);
plot(t,x3)
Am I correct? Any help would be appreciated.

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Daniel M
Daniel M 2019-10-28
编辑：Daniel M 2019-10-28
That's correct. You plotted three signals, with angular frequency of pi, 3/2*pi, and 2*pi rad/s. This corresponds to frequency of 0.5, 0.75, and 1 Hz.
Note, you might want to make increment t using a smaller step size, so the plots are smoother. Try:
t = 0:0.001:10;
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Daniel M
Daniel M 2019-10-28
You sure can, but again, give yourself more samples.
n = 0:0.1:5;

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