# Given the vectors M = 10a x + 4a y 8a z and N = 8a

## Question:

Given the vectors M = −10a_{x} + 4a_{y} − 8a_{z} and N = 8a_{x} + 7a_{y} − 2a_{z}, 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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