In Exercises 53-54, use the cotUng nwtrix A - [ ~ - ~ ~1 and its invert< - J 0 - J_ A-

Chapter 6, Problem 53

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In Exercises 53-54, use the cotUng nwtrix A - [ ~ - ~ ~1 and its invert< - J 0 - J_ A- -[-! -l ] to wriu n cryptogram for ~adr - 3 mes:rage. Check your result by dt>cotfing lh~ cryptogram. s E N D c A s H19 5 14 4 0 3 19 8['9 4Use14530 ~

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