having difficulty using a for loop to solve an equation

[naryana.shankara]

here is my task:
<http://octave.1599824.n4.nabble.com/file/n4683785/Screenshot_2017-06-19_17-54-18.png>
 

Create two arrays x and y, whose entries are defined as
x  = i,
y  = j
i = 1, 2, 3, 4, 5.
y=5 − 2j,
j = −2, −1, 0, 1, 2.
Then, compute the cubed sum of these two vectors in two different ways.
First, use a for loop
to construct the vector z as
z  = (x + y )^ 3 ,
i = 1, 2, 3, 4, 5.
my code:
%Vectorization
clc;
clear;
%x=i;                %array created per spec
%i=[1 2 3 4 5];      %array created per spec
y=5-2j;             %array created per spec
j=[-2 -1 0 1 2];    %array created per spec
z=(y).^3;           %formula to test for loop
for m=j
  t=z
end  
the result:
t =   65 - 142i
t =   65 - 142i
t =   65 - 142i
t =   65 - 142i
t =   65 - 142i

I know the answer should be t= (the cube for the elements in j)
I'm new to octave but I've always needed adult supervision with loops.  What
am I missing?




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