blackroserukia blackroserukia

08-06-2019
Mathematics

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

A.-1

b.-3

c;sqr5

dsqr3

Respuesta :

freckledspots freckledspots

08-06-2019

Answer:

sqrt(5)

Step-by-step 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)

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