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Need help.... How to plot sequences

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Hello,
I have a report due in two days and have no idea how to plot this sequence. I know almost nothing about Matlab and my tutors as usual have been no help at all.
If some one can help me out here I would greatly appriciate it.
The sequence is:
𝑥(𝑛) = {… , 5, 4, 3, 2, 1, 5, 4, 3, 2, 1, 5, 4, 3, 2, 1, … }
Cheers

  2 Comments

Mario van Rooij
Mario van Rooij on 27 Nov 2020
Where does the n come into play? What do you want to plot when n = 10 for example?
Connor Wright
Connor Wright on 27 Nov 2020
I want to plot −20 ≤ 𝑛 ≤ 12.

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Accepted Answer

Star Strider
Star Strider on 27 Nov 2020
The mod function and the colon,: operator are your friends!

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Star Strider
Star Strider on 27 Nov 2020
Use the colon operator with the ‘n’ vector, and then operate on it to create the triangular pulses.
That will eliminate the vector length problem.
Connor Wright
Connor Wright on 27 Nov 2020
I really am sorry about this but I dont understand what you mean.
Star Strider
Star Strider on 27 Nov 2020
Please experiment!
Use my example as a guide, and carefully read the documentation for colon. Note how to use it to code a descending sequence.

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