Multiplication by a Matrix Can Be Used to Encode Messages

question 130

Multiple Choice

Multiplication by a matrix can be used to encode messages (and multiplication by its inverse can be used to decode messages) . Given the code a b c d
And the code matrix , use matrix A to encode the message "The die is cast."

• A) ​
• B) ​
• C) ​
• D) ​
• E) ​

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