However for each ’i’ row there will only be 3 ‘j’ columns with nonzero numbers How do you determine which three columns of the ith row are non-zero? In your above example, for the second row, the first three elements are non-zero. Does this mean that in the third row, the 2-4 columns are non-zero? In which case you would do something like
A = zeros(100,100);
h = 1;
for i = 2:99;
A(i, i+1) = ((1/h) + i);
A(i, i) = (-2/h);
A(i, i-1) = ((1/h) - i);
end
Or are you trying to do something else?
