Matrices - Test Review Activity

Front

What is a matrix?

Back

A matrix is a rectangular array of numbers, symbols, or expressions, arranged in rows and columns.

Front

What is the inverse of a matrix?

Back

The inverse of a matrix A is another matrix, denoted A^-1, such that when A is multiplied by A^-1, the result is the identity matrix.

Front

How do you find the determinant of a 2x2 matrix?

Back

For a 2x2 matrix [[a, b], [c, d]], the determinant is calculated as ad - bc.

Front

What is the identity matrix?

Back

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

Front

What does it mean to subtract matrices?

Back

To subtract matrices, you subtract corresponding elements from each matrix.

Front

What is matrix multiplication?

Back

Matrix multiplication involves multiplying rows of the first matrix by columns of the second matrix.

Front

What is a scalar in relation to matrices?

Back

A scalar is a single number that can multiply a matrix, affecting each element of the matrix.

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.

Front

What is a zero matrix?

Back

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