(2) (a) Find all of the solutions modulo 15 to 6x = 15 mod 18. Express your answer in terms of the least non-negative residues. (b) Write the set of invertible elements modulo 18. Find the inverse of eac

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Chapter2: Second-order Linear Odes
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(2) (a) Find all of the solutions modulo 15 to
6x = 15 mod 18.
Express your answer in terms of the least non-negative residues.
(b) Write the set of invertible elements modulo 18. Find the inverse of each.
Transcribed Image Text:(2) (a) Find all of the solutions modulo 15 to 6x = 15 mod 18. Express your answer in terms of the least non-negative residues. (b) Write the set of invertible elements modulo 18. Find the inverse of each.
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