Answer:
Explanation:
try
clc
clear
close all
x=linspace(0,2*pi,7);
z=cos(pi.*x./3)
% the output on mine is to 4 decimals so it looks a bit different than what the output on your example is , but, I think if you change the format to decimal 2 it will look the same :)
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16/17 can't be simplified but if you want it as a decimal it's 0.9412 or 0.94
The same thing as if you do it once