To generate following sequence

To generate using stem function -

y(n) = 5 * e^cos(pi*n/3) * u(n-3)

[Image Analyst]

What function is u?

[Anmol Chauhan]

unit step function

Answer 1

[Thiago Henrique Gomes Lobato]

You can plot it actually pretty easily, just make sure to use your own u vector below :

n = 4:100;
u = ones(1,97);
y =  5 .* exp(cos(pi*n/3)) .* u(n-3);
stem(n,y)