Encode the message "CRYPTOGRAPHY" using matrix A. Remember to partition the numerical message into groups of two. A = 2 --[13] The coded message is: ...

11. Use the coding matrix A= O A. ACTS O B. ARMS O C. ABLE O D. ALAS 1-4 -2 and its inverse A¹ = -1 9 2 4 to decode the cryptogram -7-8 16 21

Blank A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 0 1 2 3 4 5 6 7 [²32] 1. Using the cryptography code above, the following message was encoded with matrix A. Decode this message, to reveal the title of a movie, which is a favorite of one of your classmates. 26 27 56 69 78 97 12 12 28 29 72 87 38 57 Suppose matrix A = Suppose matrix C - 2 2 2 2 3 2 2 2 3 2. Using the same code, the following message was encoded with matrix C. Decode the message, to reveal the title of a book, that is a favorite of one of your classmates. 70 85 70 64 73 76 26 26 27 56 69 71 46 57 55 46 53 48 62 80 66

40. Decode the message 71, 100, -1, 28, 43, -5, 84, 122, -11, 63, 98, -27, 69, 102, -12, 88, 126, -3, which was encoded using the matrix of Exercise 38. 1 2 -2 2 3 0 1 the matrix in the next picture is from 38 but here is a picture of 38 38. Encode the message THE BRITISH ARE COMING using the matrix