ch.12 Vectors

# ch.12 Vectors - Chapter 12 Vectors 12.1 Vectors Key Points...

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Chapter 12 Vectors 12.1 Vectors

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Key Points The definition of displacement Physical quantities represented by vectors Addition and subtraction of vectors geometrically Scalar multiplication The magnitude of a vector
Vectors Many physical quantities add in the same way as displacements. Such quantities are known as vectors. Like displacements, vectors are often represented as arrows. A vector has magnitude (the arrow’s length) and direction (which way the arrow points). Examples of vectors: • Velocity: This is the speed and direction of travel • Force: The strength and direction of a push or a pull. • Magnetic Fields: A vector gives the direction and intensity of a magnetic field at a point. • Vectors in Economics: Vectors are used to keep track of prices and quantities. • Vectors in Computer Animation: Computers generate animations by performing enormous numbers of vector-based calculations. • Population Vectors in Biology: Populations of different animals or age groups can be represented using vectors. Functions Modeling Change: A Preparation for Calculus, 4th

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Basic Terminology A vector in the plane is a directed line segment. Vectors may be represented by one lowercase
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## This note was uploaded on 04/04/2012 for the course MATH 2412 taught by Professor Staff during the Spring '08 term at Austin CC.

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ch.12 Vectors - Chapter 12 Vectors 12.1 Vectors Key Points...

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