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4: Vectors in Space, n-Vectors

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To continue our linear algebra journey, we must discuss n-vectors with an arbitrarily large number of components. The simplest way to think about these is as ordered lists of numbers,

a=(a1an).

Do not be confused by our use of a superscript to label components of a vector. Here a2 denotes the second component of the vector a, rather than the number a squared! We emphasize that order matters:

(7425)(7245).

The set of all n-vectors is denoted Rn. As an equation

Rn:={(a1  an)|a1,,anR}.

Thumbnail: The volume of this parallelepiped is the absolute value of the determinant of the 3-by-3 matrix formed by the vectors r1, r2, and r3. (CC BY-SA 3.0; Claudio Rocchini)

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This page titled 4: Vectors in Space, n-Vectors is shared under a not declared license and was authored, remixed, and/or curated by David Cherney, Tom Denton, & Andrew Waldron.

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