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Unformatted text preview: If we are given a vector a , the unit vector a ˆ , is a vector of length one unit in the same direction as a . To change the length of the vector to one, divide the original vector by its length. a a a = ˆ Ex . Given j i q 2 5= , find its unit vector. You could also write it in column representation: Ex . Find unit vectors in the same direction as each vector. a) 4 6 3 b) 2 1 2 4 Assign: MM p.239 Exercise 13.3 #13, MSL p.370 Exercise 15G #16...
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 Fall '08
 Kim
 Calculus, Linear Algebra, Distance Formula, Vectors, Dot Product, Elementary mathematics

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