Identity and Inverse Matrices - ClassZone

Page 1 of 2 4.4 Identity and Inverse Matrices 225 USING INVERSE MATRICES IN REAL LIFE A cryptogram is a message written according to a secret code.(The Greek word kruptosmeans hiddenand the Greek word grammameans letter.)The following technique uses matrices to encode and decode messages. First assign a number to each letter in the alphabet with 0 assigned to a blank space. ................
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