Matrices Basics

Front

What is the dimension of the matrix product AB if A is 1x4 and B is 4x7?

Back

1x7

Front

What must be true in order to ADD two matrices?

Back

The dimensions must be equal.

Front

What is the solution type if a system of equations has infinitely many solutions?

Back

Infinitely Many Solutions

Front

What is the result of the product BA if A is 1x4 and B is 4x7?

Back

Undefined

Front

Which of the following products can NOT be made from matrices A (1x4), B (4x7), C (4x3), and D (4x2)?

Back

BC

Front

Define a matrix.

Back

A rectangular array of numbers arranged in rows and columns.

Front

What is a square matrix?

Back

A matrix with the same number of rows and columns.

Front

What is the identity matrix?

Back

A square matrix with ones on the diagonal and zeros elsewhere.

Front

What is the determinant of a 2x2 matrix?

Back

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

Front

What is a zero matrix?

Back

A matrix in which all elements are zero.