The product of a matrix times a vector is defined, and used to show that a system of linear equations is equivalent to a system of linear equations involving matrices and vectors. The example uses a 2x3 system.
Definition of sum of matrices, product of a scalar and a matrix
In this section we will back up and start simple. We begin with a definition of a totally general set of matrices, and see where that takes us.
Pre-class quiz (four questions) on matrix operations to be completed by students after having watched a pre-class video on the topic.