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Difference between two vectors
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[QUOTE="Mark44, post: 6015414, member: 147785"] The two types of vectors you're likely to come across in your class are displacement vectors and position vectors. Per wikipedia, a displacement vector is "a vector that specifies the change in position of a point relative to a previous position" A position vector is "a vector representing the position of a point in an [URL='https://en.wikipedia.org/wiki/Affine_space'][U]affine space[/U][/URL] in relation to a reference point" They don't list directional vectors, possibly it's redundant to add "directional." A vector already has a direction, unless it's the zero vector. For the problems you're working on, I think it's more important that you understand the difference between a vector and a line, which can be defined by a point on the line and a vector having the same direction as the line. [/QUOTE]
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Difference between two vectors
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