Matrix Operations Review

Front

What is the name of each entry of a matrix?

Back

Element

Front

What are the dimensions of a matrix?

Back

The dimensions of a matrix are given in the form of rows x columns (e.g., 5x4 means 5 rows and 4 columns).

Front

What must be true in order to ADD two matrices?

Back

The dimensions must be equal.

Front

How many columns are in a 5 x 4 matrix?

Back

4

Front

What is the result of B - A if B = [[1, 2], [3, 4]] and A = [[2, 3], [4, 5]]?

Back

B - A = [[-1, -1], [-1, -1]]

Front

What is a square matrix?

Back

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

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 determinant of a 2x2 matrix [[a, b], [c, d]]?

Back

The determinant is ad - bc.

Front

What is a zero matrix?

Back

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

Front

What is matrix multiplication?

Back

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