Calculus 3: Vector Calculus in 2D (4 of 39) What is a Unit Vector?

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In this video I will explain what is a unit vector and clarify some of its confusing nuances. I will show the nomenclatures of the directional unit vectors.

Next video in the series can be seen at:
  1. Michel van Biezen
  2. ilectureonline
  3. ilectureonline.com
  4. Mike
  5. Mike van Biezen
  6. van Biezen
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Professor, you started the video by asking:

What is a unit vector?

But then you explored the directional unit vector and went on to say how we can divide the vector by the magnitude to obtain a unit vector pointing in the same direction. However, what exactly do we do this for? Why do we divide it by its magnitude? What is the purpose of doing this to get the unit vector? What do we do with this length 1 vector?

wirito