A discussion of when matrix addition, subtraction and multiplication are defined, and when it is possible to calculate matrix determinants and inverses, based on the order of the matrices concerned.

Defined matrix operations (MathsCasts)

These MathsCasts were produced by the mathematics support centres at Swinburne University, the University of Limerick and Loughborough University. They were part of a collaborative research project to develop high quality resources and investigate the effectiveness of MathsCasts to support mathematics learning. The full set of resources are available at http://commons.swin.edu.au/s/mathscasts MathsCasts are licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License

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Defined matrix operations (MathsCasts)

Defined matrix operations (MathsCasts)