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Collinear vector. Properties

Lecture






Theorem

If there are two non-zero collinear vectors, then there exists a number λ such that

  Collinear vector.  Properties

Evidence.

Let a and b be equally directed.

  Collinear vector.  Properties

- These are vectors that are equally directed and have the same absolute value | b |. So they are equal:

  Collinear vector.  Properties

When vectors a and b are oppositely directed in the same way, we conclude that

  Collinear vector.  Properties

The theorem is proved.

Theorem

Any vector with can be represented as

  Collinear vector.  Properties
created: 2014-10-05
updated: 2021-03-13
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Planometry

Terms: Planometry