Question: (a) Find the unit vector that is parallel to the vector A = A x i + A y j + A z k. (b)

(a) Find the unit vector that is parallel to the vector A = Ax i + Ay j + Az k. 

(b) Find the component of the vector A = 2 i - j - k in the direction of the vector B = 3 i + 4 j.

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