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Chapter 5 section 5
Question | Answer |
---|---|
inverse matrices | their product has to have the same identity of the matrix for multiplication and each of them multiplied together should form the matrices [1 0] 0 1 |
square matrices | those with the same number of rows and columns |
inverse matrix theorem | if ad-bc is not equal to 0, the inverse of [a b] [d/ad-bc -b/ad-bc] c d is -c/ad-bc a/ad-bc |