Linear Algebra Review ---Vectors and Linear Combinations

1. Column vector;

2. Vector Addition: The order of addition makes no difference;

3.Scalar Multiplication;

4.Linear combination: The sum of cv and dw is a linear combination of v and w;

5.Represent vector v: Two numbers, Arrow from (0,0), Point int the plane,(Perfect Match);

6. If the vectors u, v, w are in three-dimensional space(components chosen at random), then the combination of cu fill a line,the combination of cu + dv fill a plane, and the cu + dv + ew fill three-dimensional space.