If u =(-2,-1,1) and v° =(7,-4,3), a unit vector in the direction of the vector w =3u"-v corresponds to: a) (–13, 1, 0) b) (23, –11, 8) 23 -11 8 c) V714' /714' /714 -13 1 d) V170' V170

Q: a= b=

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