What are the dimensions of the matrix? [ 6 ] [ 2 ] [ 8 ] a. 3 x 1 b. 3 x 3 c. 4 x 1 d. 1 x 3

3 x 1

There are 3 rows and 1 column. We write the number of rows first. The rows are laid out horizontally while the columns are vertical. We say this is a "3 by 1 matrix".

For this case we have that by definition, the dimension of a matrix is given by:

The number of rows by the number of columns

It is observed that we have a column that consists of three rows.

Thus, the dimension of the matrix is 3 * 1

3 * 1

Option A