Which property is shown in the matrix addition? the 4 by 1 matrix, row 1, column 1, 5 row 2, column 1, negative 7 row 3, column 1, 6 point 2 row 4, column 1, 12 plus open paren the 4 by 1 matrix, row 1, column 1, negative 1 row 2, column 1, 0 point 4 row 3, column 1, negative 9 point 9 row 4, column 1, 0 plus the 4 by 1 matrix, row 1, column 1, 0 row 2, column 1, 0 row 3, column 1, negative 8 point 5 row 4, column 1, 2 close paren is equal to open paren the 4 by 1 matrix, row 1, column 1, 5 row 2, column 1, negative 7 row 3, column 1, 6 point 2 row 4, column 1, 12 plus the 4 by 1 matrix, row 1, column 1, negative 1 row 2, column 1, 0 point 4 row 3, column 1, negative 9 point 9 row 4, column 1, 0 close paren plus the 4 by 1 matrix, row 1, column 1, 0 row 2, column 1, 0 row 3, column 1, negative 8 point 5 row 4, column 1, 2
The expression changes only the grouping of the three matrices: it is A + (B + C) on the left and (A + B) + C on the right. The order of the matrices stays the same, so this demonstrates the associative property of matrix addition.
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