created 09/29/97; revised 08/06/00; 07/20/03; 07/20/09; 01/07/2015

The previous chapter discussed addition of column matrices.
This is an easy, mechanical procedure.
This chapter shows why it is a *useful* procedure
by discussing
how it represents the operation of
vector addition.

- Addition of vectors
- Addition of vectors using the head-to-tail rule
- Coordinate frames
- Representing geometrical points with column matrices
- Representing vectors with column matrices
- Addition of vectors using column matrices
- Vector plus point addition

Just for practice, add the following two column matrices:

a= ( 3, 2 )^{T}b= (-2, 1 )^{T}