Review, as much as necessary, how to do matrix addition, multiplication of a matrix by a scalar, matrix multiplication, determinant of a matrix (\(2\times 2\) and \(3\times 3\)), and inverse of a matrix (\(2\times 2\) only). You might find the information at the following links useful.
There is nothing to turn in, but it will help you get familiar with the linear algebra that we will frequently use in this course.