plot 2 signals for sin(t)

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?

[Sam Chak]

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

[Sam Chak]

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).

Answer 1

[Sam Chak]

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

[Mohammed Alqahtany]

thank you but still i cant solve it

[Sam Chak]

Alright, can you copy the code and show me the equation that cannot be solved? I'll see how to guide you from here.