Question: Given the vectors M = 10a x + 4a y 8a z and N = 8a x + 7a y 2a z ,

Given the vectors M = −10ax + 4ay − 8az and N = 8ax + 7ay − 2az, find:

(a) A unit vector in the direction of −M+ 2N;

(b) The magnitude of 5ax + N − 3M; 

(c) |M||2N|(M+ N).

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