Coding and Decoding

The message:

I am a rock star!!!

The encoding matrix is:

The phrase matrix is:

* =

The phrase as a single line is written as: 198/200 130/180/144 85 172 160/100 145 168 114 27 24 15

Discussion Questions

1. Find the determinant of the encoding matrix
2. Find the inverse of the decoding matrix

• Decode the message

1. How can this concept apply in sending messages over electronic devices such as phones?