Matrices

Front

What comes first in the order of describing the dimensions of a matrix?

Back

Row

Front

What is the solution to the system represented by the matrix if the answer is (2, -1, 5)?

Back

(2, -1, 5)

Front

Solve for x, y, and z: x = -3, y = -1, z = -2. What are the values?

Back

x = -3, y = -1, z = -2

Front

What mistake did Jeffrey make in his matrix representation?

Back

There should be a zero in the second column of the third representing the y.

Front

What is Gaussian Elimination?

Back

A method for solving systems of linear equations by transforming the matrix into row echelon form.

Front

What is a matrix?

Back

A rectangular array of numbers arranged in rows and columns.

Front

Define the term 'identity matrix'.

Back

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

Front

What is the purpose of finding the inverse of a matrix?

Back

To solve systems of equations or to find solutions to matrix equations.

Front

What does it mean if a system of equations has no solution?

Back

The lines represented by the equations are parallel and do not intersect.

Front

What is the result of multiplying a matrix by its inverse?

Back

The identity matrix.