Having defined addition and multiplication for matrices, we describe the laws of matrix algebra. These are very similar to the usual laws of algebra with one important exception: matrix multiplication is NOT commutative.

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Visit http://ilectureonline.com for more math and science lectures! In this video I will find the length of a polar curve (spiral) where r=e^(theta/2) from theta=0 to theta=pi. Ex. 3 Next video in the series can be seen at: https://youtu.be/X4BFX-nKWII

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