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Vector Magnitude

The length of a vector is called the magnitude or modulus of the vector.

Example:

Express each of the following vectors as a column vector and find its magnitude.

Videos

Finding the magnitude and direction of a vector -
Professor Edward Burger explains finding the magnitude and direction of a vector.

Finding the magnitude and direction of a vector

A vector can also be 3-dimensional.
The following video gives the formula, and some examples of finding the magnitude, or length, of a 3-dimensional vector.

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