How can I solve a set of equations for multiple inputs?

I have to solve a set of equations for multiple different trials, with 2 variables in each equation. I was told to use a for loop using matrices, but do not know how to execute a for loop using multiple matrices to solve multiple equations. The code I have is posted, but it's basically just the given data. Any help? Thanks!

for 
   Smax = [1000 1000 1500 1500 200 2500 0.000001 2500];
   Smin = [0.000001 -1000 500 -500 -1000 -1200 -4500 1500];
   
   SDelta = Smax - Smin; % Stress Range
   Sa = (Smax - Smin)/2; % Alternating Stress
   Sm = (Smax + Smin)/2; % Mean Stres
   R = Smin / Smax; % Stress Ratio
   A = Sa / Sm; % Amplitude Ratio
 
end;

[James Tursa]

Please post your code as text and highlight it with the CODE button. We can't copy & run pictures.

Answer 1

[Alan Stevens]

You don't need a for loop if all you are doing is calculating SDelta, Sa, Sm, R and A. Just use

   Smax = [1000 1000 1500 1500 200 2500 0.000001 2500];
   Smin = [0.000001 -1000 500 -500 -1000 -1200 -4500 1500];
   
   SDelta = Smax - Smin; % Stress Range
   Sa = (Smax - Smin)/2; % Alternating Stress
   Sm = (Smax + Smin)/2; % Mean Stres
   R = Smin ./ Smax; % Stress Ratio
   A = Sa ./ Sm; % Amplitude Ratio

Notice that in R and A your "/" is replaced by "./" (dot divide). This performs element by element division.