a. Find the unit vector parallel to the sum of the vectors a = [2, 4, -5], b = [1, 2, 3]. b. Find the area of parallelogram with adjacent sides, a = 7i - j+k and b =2j – 3k c. -1 5 -3 y w Let A = 3 z t+1 -6 3 Evaluate the following: 4A, x B, and A+3C.

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