Matrix Review

Front

What must be true in order to MULTIPLY two matrices?

Back

The number of columns of the first matrix must equal the number of rows of the second matrix.

Front

What must be true in order to ADD two matrices?

Back

The dimensions of the two matrices must be equal.

Front

What is the determinant of a matrix?

Back

A scalar value that is a function of the entries of a square matrix, providing important properties of the matrix.

Front

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

Back

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

Front

What is a square matrix?

Back

A matrix with the same number of rows and columns.

Front

What is a zero matrix?

Back

A matrix in which all the elements are zero.

Front

What is the identity matrix?

Back

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

Front

What is matrix addition?

Back

The operation of adding two matrices by adding their corresponding elements.

Front

What is matrix multiplication?

Back

The operation of multiplying two matrices by taking the dot product of rows and columns.

Front

What is a system of equations?

Back

A set of equations with the same variables that are solved together.