Plotting continious-time signal

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.

 采纳的回答

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;

3 个评论

Sir, can I plot the discrete versions as following?
n = 0:1:5;
x1 = cos(pi/2*n);
subplot(2,1,1)
stem(n,x1)
x2 = cos(3*pi/2*n);
subplot(2,1,2)
stem(n,x2)
You sure can, but again, give yourself more samples.
n = 0:0.1:5;
Many thanks sir.

请先登录,再进行评论。

更多回答(0 个)

类别

帮助中心File Exchange 中查找有关 Line Plots 的更多信息

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by