3.2.2 Element-by-element array operations

Each element of an array can be individually operated on. For example we can subtract or add a constant to each element or multiply or divide each element by a constant factor. The operators for these ``scalar-array'' operations are the normal operations for arithmetic, +, -, *, and /. For example,

% Scalar-array operations
clear all;
m = [1 0 -1 4
    4 5 -6 7
    -2 2 2 1]

m + 1 % add 1 to each element
m - 2 % subtract 2 from each element
3*m/2 % multiply each element by 3 and divide by 2

You've actually seen several examples of this already. Go back and take a look array $g$ in the first example of Section 3.1.