average 2 rows of a matrix in matlab in matlab

To average two rows of a matrix in Matlab:

main.m
matrix = [1 2 3; 4 5 6; 7 8 9; 10 11 12];

% Select the two rows to average
row1 = matrix(2,:);
row2 = matrix(3,:);

% Compute the average of the rows
averaged_row = (row1 + row2)/2;

% Replace the selected rows with the averaged row
matrix(2:3,:) = averaged_row;
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In this example, we select the second and third rows from the matrix and compute their average. We then replace the second and third rows with the averaged row. The resulting matrix will have the same number of rows, but the selected rows will be replaced with the averaged row.