Vectors and magnitude (1 Viewer)

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hello, can someone please tell me if this is correct? no it is not for my homework.

place vector symbols above all letters.

|m-n| = |n|-|m|

place vector symbols about the letters to specify they are vectors

so are they the same?
 

berkeman

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If I understand the question, then no they are not the same. Can you tell me why?
 

mathman

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For example, look at m=n and m=-n.
 

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