% Example 9.1a (Physics 330)

s=0; % set a variable to zero so that 1/n^2 can be repeatedly added to it
N=10000;  % set the upper limit of the sum

for n=1:N % start of the loop

% add 1/n^2 to s each time, then put the answer back into s

  s=s+1/n^2;
end % end of the loop

fprintf(' Sum = %g \n',s)  % print the answer