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07-09-2017
Mathematics

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What values of a make v = 2a i − a j + 32k perpendicular to w = 6 i + a j − k? (enter your answers as a comma-separated list.) a =?

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13-09-2017

Taking the Dot Product = 0 shows perpendicular or orthagonal vectors.
Then 2ax6 -axa +32x(-1) = 0
a^2 -12A +32 = 0
(a-8)(a-4) = 0
a = 4,8

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