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a) Find all m 1 such that 27 = 9 (mod m). [1 0 1] b) If A = |0 1 11 1| is a zero-one matrix, find A A A21. b) Find the inverse of the encrypting function f(x) = (5 – x) mod 26, 0 s x < 25, and use it to decrypt the message "ZRQUBFNB".

a) Find all m 1 such that 27 = 9 (mod m). [1 0 1] b) If A = |0 1 11 1| is a zero-one matrix, find A A A21. b) Find the inverse of the encrypting function f(x) = (5 – x) mod 26, 0 s x < 25, and use it to decrypt the message "ZRQUBFNB".

Elementary Linear Algebra (MindTap Course List)
Elementary Linear Algebra (MindTap Course List)
8th Edition
ISBN:9781305658004
Author:Ron Larson
Publisher:Ron Larson
Chapter3: Determinants
Section3.3: Properties Of Determinants
Problem 63E: Let A be an nn matrix in which the entries of each row sum to zero. Find |A|.
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a) Find all m >1 such that 27 = 9 (mod m). [1 11 b) If A 0 1 1| is a zero-one matrix, find A A A21. |1 b) Find the inverse of the encrypting function f(x) = (5 – x) mod 26, 0 < x < 25, and use it to decrypt the message "ZRQUBFNB".
Transcribed Image Text:a) Find all m >1 such that 27 = 9 (mod m). [1 11 b) If A 0 1 1| is a zero-one matrix, find A A A21. |1 b) Find the inverse of the encrypting function f(x) = (5 – x) mod 26, 0 < x < 25, and use it to decrypt the message "ZRQUBFNB".
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