You are given a matrix of numbers, your objective is to use the decoder ring to find the hidden message.
encoded_message = [100,26,104,47;67,103,32,107;105,93,104,78]
Decoder_Ring = [1,3;3,1]
Output = 'hi'
Column norms of a matrix
03 - Matrix Variables 1
07 - Common functions and indexing 3
Basic commands - Greatest common divisor
Brain Teaser Solver
convert between ascii and characters
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