How to plot digital sequence in MATLAB

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I have to plot following digital sequence in MATLAB: a^n * u[n]. a is just a constant. How do I do this?
Thanks

Accepted Answer

David Hill
David Hill on 24 May 2022
n=1:length(u);
a=1.7;
plot(n,a.^n.*u);%assuming u is a vector
  3 Comments
Walter Roberson
Walter Roberson on 25 May 2022
stem()
Note: u[n] is not a vector as such: it indicates the unit step function.

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More Answers (1)

Walter Roberson
Walter Roberson on 24 May 2022
If you are certain that all of your values are finite, then you can replace u[n] by (n>=0)
If you have negative infinite values then it is not obvious that multiplying by the unit step function is well defined.

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