Yvette encoded a secret phrase using matrix multiplication. Using A = 1.B = 2. C = 3, and so on, she multiplied the clear text
code for each letter by the matrix Cu
t
to get a matrix that ventes
to get a matrix that represents the encoded text. The matrix representing the
2
4873114 30 136 78 35
encoded text is
(21 32 50 1358 35 15
decode the text
What is the secret phrase? Determine the location of spaces after you
O FIND THE PRODUCT
O FIND THE INVERSE
O FINE IS THE PIANO
O FINE IS A WARM DAY