# CHAPTER 13 — Matrices and Simple Matrix Operations

In many fields
matrices are used to represent objects and
operations on those objects.
In computer graphics,
points and directed line segments are represented with
column matrices.
Other matrix types
represent operations on those objects

#### Chapter Topics:

- What a matrix is.
- Dimensions of a matrix.
- Elements of a matrix.
- Matrix addition.
- Zero matrix.
- Matrix negation.
- Matrix subtraction.
- Scalar multiplication of a matrix.
- The transpose of a matrix.