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 to get a matrix that represents the encoded text. The matrix representing the encoded text is . What is the secret phrase? Determine the location of spaces after you decode the text. brainly
2 answers:
Answer:
Blue is the glove.
Step-by-step explanation:
Assuming the matrix which multiplies the clear text code is:
|-3 2|
C =|-4 3|
And the matrix re<presenting the encoded text is
:
|10 -26 -49 9 3 -13 -50|
B = |16 -33 -63 16 9 -10 -65|
Calling X the secret message, the relationship between the 3 matrices can be represented as:
C*X = B
Solving for X:
X = C^-1*B
where C^-1 is the inverse of C.
|-3 2|
C^-1 =|-4 3|
Multiplying:
|2 12 21 5 9 19 20
|
X = |8 5 7 12 15 22 5
|
Replacing numbers by its corresponded letter (see picture attached):
|B L U E I S T
|
x = |H E G L O V E
|
Answer:
FIND THE INVERSE
Step-by-step explanation:
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