Yvette encoded a secret phrase using matrix multiplication. Using A= 1, B = 2, C = 3, and so on, she multiplied the clear text
15
2
code for each letter by the matrix C-
to get a matrix that represents the encoded text. The matrix representing the
12 11
What
ecret phrase? Determine the location of spaces after you
48 73114 30 136 78 35
encoded text is
21 32 50 13 58 35
decode the text.
O FIND THE PRODUCT
O FIND THE INVERSE
FINE IS THE PIANO
FINE IS A WARM DAY