Matrices Practice Test

Front

What is a square matrix?

Back

A square matrix is a matrix that has the same number of rows and columns.

Front

How do you subtract two matrices A and B?

Back

To subtract two matrices A and B, subtract the corresponding elements of B from A.

Front

What does it mean for a matrix operation to be undefined?

Back

A matrix operation is undefined when the matrices involved do not have compatible dimensions for the operation.

Front

What are the dimensions of a matrix?

Back

The dimensions of a matrix are given in the form 'rows x columns', indicating the number of rows and columns it contains.

Front

How do you find the sum of two matrices?

Back

To find the sum of two matrices, add the corresponding elements of the matrices together.

Front

What is the result of adding a matrix to a zero matrix?

Back

The result is the original matrix, as adding zero to any element does not change its value.

Front

What is the identity matrix?

Back

The identity matrix is a square matrix with ones on the diagonal and zeros elsewhere, serving as the multiplicative identity in matrix multiplication.

Front

What is the transpose of a matrix?

Back

The transpose of a matrix is obtained by flipping it over its diagonal, turning rows into columns and vice versa.

Front

What is a row matrix?

Back

A row matrix is a matrix that has only one row.

Front

What is a column matrix?

Back

A column matrix is a matrix that has only one column.