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$\begingroup$ At what level. Have they taken a course in linear algebra? $\endgroup$– Gerald EdgarCommented May 8, 2016 at 23:32
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$\begingroup$ It varies widely. It's safe to assume everyone has seen a matrix multiplied by a vector at some point in their lives, but may not have heard the words "linear transformation" or seen a good visualization of a cross product. $\endgroup$– kotooleCommented May 8, 2016 at 23:43
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