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Use the dot product to find [v] when v =(-2,-1)


A.-1

b.-3

c;sqr5

dsqr3

User Brij
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1 Answer

4 votes

Answer:

sqrt(5)

Explanation:

Honestly think this person means to find the magnitude of the vector. You can use dot product here, the vector with itself... But that isn't the last step.

v dot v=4+1=5

and so |v|=sqrt(5)

User Ben Straub
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