If ||v|| = 3, what is ||-2v||?
1 Answer
Nov 6, 2015
The norm of
Explanation:
Using formulas, you know that
Intuitively, the norm measures the leght of a vector, and multiplying a vector by a number means to stretch (or shrink) the vector according to the number. For example,
The sign of the number only affect the direction of the vector: