loop results on the same result

Hello, I'm trying to calculate a variable with in a loop, yet the loop always result on the same value, I've done the calculations on a paper and they shouldn't be equal. here's the loop code:

 for i=1:1
        alpha_g(i)= -((z1(i)./((ki_2(j))-1))+(z2(i)./((ki_1(j))-1)));
  for j=1:6
        alpha_g(j)= -((z1(i)./((ki_2(j))-1))+(z2(i)./((ki_1(j))-1)));
  end
  end

Answer 1

[Walter Roberson]

Your outer loop use j before it is defined. After the inner loop, j is left at the last thing it was assigned, so it will be 6. And that is what is used in the next iteration of the for i loop.

Also, you are writing to the same variable in both loops.