MATSEC AM Pure Mathematics Complete Prep Course — Lesson 89: Matrix multiplication and its properties

Sarah works through matrix multiplication for MATSEC Paper One. She sets the conformability rule that the columns of the left matrix must match the rows of the right, shows how each entry is built from a row and a column, and separates the rules that survive from those that fail. Associativity and two-sided distributivity hold. Commutativity and cancellation do not. Two worked two by two products make the point.

Lesson 89 of 158 in the MATSEC AM Pure Mathematics Complete Prep Course audio course from ExamPrepRise.

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