6.1 Intro to Matrices Practice #1

Front

What is a matrix?

Back

A matrix is a rectangular array of numbers arranged in rows and columns.

Front

What are the dimensions of a matrix?

Back

The dimensions of a matrix are given in the form 'm x n', where 'm' is the number of rows and 'n' is the number of columns.

Front

How do you add two matrices?

Back

You can add two matrices if they have the same dimensions by adding their corresponding elements.

Front

What is the result of adding a 2x3 matrix and a 2x3 matrix?

Back

The result is another 2x3 matrix.

Front

What is a 5 x 4 matrix?

Back

A 5 x 4 matrix has 5 rows and 4 columns.

Front

How do you multiply a matrix by a scalar?

Back

To multiply a matrix by a scalar, multiply each element of the matrix by the scalar.

Front

What is the result of multiplying a 2x2 matrix by a 2x1 matrix?

Back

The result is a 2x1 matrix.

Front

What is a zero matrix?

Back

A zero matrix is a matrix in which all elements are zero.

Front

What is the identity matrix?

Back

The identity matrix is a square matrix with ones on the diagonal and zeros elsewhere.

Front

What is the transpose of a matrix?

Back

The transpose of a matrix is obtained by swapping its rows and columns.