Lesson 3-1 Practice

Front

What must be true in order to ADD two matrices?

Back

The dimensions must be equal.

Front

What comes first in the order of matrix dimensions?

Back

Row

Front

How many columns are in a 5 x 4 matrix?

Back

4

Front

What are the dimensions of a matrix with 3 rows and 2 columns?

Back

3 x 2

Front

In Matrix R, what element is in the second row, third column?

Back

6

Front

What is a matrix?

Back

A rectangular array of numbers arranged in rows and columns.

Front

What is the order of a matrix?

Back

The number of rows and columns it contains.

Front

Can you add a 2 x 3 matrix to a 3 x 2 matrix?

Back

No, because their dimensions are not equal.

Front

What is the result of multiplying a 2 x 3 matrix by a 3 x 2 matrix?

Back

A 2 x 2 matrix.

Front

What is a square matrix?

Back

A matrix with the same number of rows and columns.