# Vectors

- Created by: Jasmine.Li0278
- Created on: 08-11-18 22:52

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- Vectors and Vector Geometry
- Vectors represent a movement of a certain size in a certain direction
- Vector notations
- There are several ways to write vectors
- Column vectors: these are two numbers in brackets. One on top saying either how may left or right nd one o the bottom saying how many up or down.
- Two capital letters such as AB with an arrow over the top of them means from point A to B

- Multiplying a vector by a scalar
- Multiplying a vector by a positive number changes the vectors size but not its direction
- Multiplying a vector by a negative number the direction changes

- Adding and subtracting vectors
- a add b means to go along a then b
- c subtract d menas to go along c then backward along d
- When adding and subtracting column vectors do the top and bottom seperately

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