Question: Consider the double-jointed robotic arm shown in the figure. Let the lower arm be modeled by a = (2,3,4) the middle arm be modeled by

Consider the double-jointed robotic arm shown in the figure. Let the lower arm be modeled by a = (2,3,4) the middle arm be modeled by b = (1, -1, 3) and the upper arm by c = (4,-1,-2) where units are in feet.

(a) Find a vector d that represents the position of the hand.

(b) Determine the distance of the hand from the origin.

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