plot 2 signals for sin(t)

Question

Mohammed Alqahtany 2023-10-19

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2035779-plot-2-signals-for-sin-t

评论： Sam Chak 2023-10-19

𝑥3 (𝑡) = sin(𝑡) 𝑓𝑜𝑟 𝑡 ∈ [0,6] 𝑎𝑛𝑑 𝑡𝑠1 = 1 sec

𝑥4 (𝑡) = sin(𝑡) 𝑓𝑜𝑟 𝑡 ∈ [0,6] 𝑎𝑛𝑑 𝑡𝑠2 = 0.1 𝑠𝑒c

where 𝑡𝑠 is the step size used to sample the time interval [0,6]. a. For signals 𝑥3 (𝑡) and 𝑥4 (𝑡), use subplot function to plot them on the same figure one below the other. b. What is the difference between 𝑥3 (𝑡) and 𝑥4 (𝑡)? What do you suggest?

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Sam Chak 2023-10-19

Can you sketch the expected plots for the sampled sine waves? Or wait for a free solution in the answer later.

Sam Chak 2023-10-19

I think there are 7 points in the measurements of x3(t) because the sine wave is sampled every 1 second. Thus, over the 6 seconds, there should be 6 points plus the initial point at x3(0).

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Answer 1

Sam Chak 2023-10-19

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2035779-plot-2-signals-for-sin-t#answer_1336634

After thinking about your learning experience, to learn exactly how sine wave is sampled at a fixed time step, you can try the plotting technique described at this link:

https://www.mathworks.com/matlabcentral/answers/768377-how-to-use-a-for-loop-to-plot-sine-waves?s_tid=srchtitle