Find the uncoded 1 × 3 row matrices for the message "TWO IF BY LAND" by assigning a number to each letter in the alphabet such as 1 = A, 2 = B, 3 = C and so on (with 0 assigned to a blank space);
Then encode the message using the encoding matrix

\left[ \begin{array} { c c c } 0 & 3 & - 3 \\- 3 & - 3 & 3 \\- 3 & 3 & 0\end{array} \right]

.

A)Uncoded:

\begin{array} { l } { \left[ \begin{array} { l l l } 20 & 23 & 15\end{array} \right] \left[ \begin{array} { l l l } 0 & 9 & 6\end{array} \right] \left[ \begin{array} { l l l } 0 & 2 & 25\end{array} \right] \left[ \begin{array} { l l l } 0 & 12 & 1\end{array} \right] } \\\begin{array} { l l l l l l l l l l l l } T & \text { W } & \text { O } &&& \text { IF } &&&& \text { B Y } &&& \text { L A}\end{array} \\{ \left[ \begin{array} { l l l } 14 & 4 & 0\end{array} \right] } \\\mathrm { N } \mathrm { D } \\\end{array}

Encoded:

\begin{array} { l } { \left[ \begin{array} { l l l } - 114 & 36 & 9\end{array} \right] \left[ \begin{array} { l l l } - 45 & - 9 & 27\end{array} \right] \left[ \begin{array} { l l l } - 81 & 69 & 6\end{array} \right] } \\{ \left[ \begin{array} { l l l } - 39 & - 33 & 36\end{array} \right] \left[ \begin{array} { l l l } - 12 & 30 & - 30\end{array} \right] }\end{array}

B)Uncoded: $Find the uncoded 1 × 3 row matrices for the message TWO IF BY LAND by assigning a number to each letter in the alphabet such as 1 = A, 2 = B, 3 = C and so on (with 0 assigned to a blank space); Then encode the message using the encoding matrix \left[ \begin{array} { c c c } 0 & 3 & - 3 \\ - 3 & - 3 & 3 \\ - 3 & 3 & 0 \end{array} \right] . A)Uncoded: \begin{array} { l } { \left[ \begin{array} { l l l } 20 & 23 & 15 \end{array} \right] \left[ \begin{array} { l l l } 0 & 9 & 6 \end{array} \right] \left[ \begin{array} { l l l } 0 & 2 & 25 \end{array} \right] \left[ \begin{array} { l l l } 0 & 12 & 1 \end{array} \right] } \\ \begin{array} { l l l l l l l l l l l l } T & \text { W } & \text { O } &&& \text { IF } &&&& \text { B Y } &&& \text { L A} \end{array} \\ { \left[ \begin{array} { l l l } 14 & 4 & 0 \end{array} \right] } \\ \mathrm { N } \mathrm { D } \\ \end{array} Encoded: \begin{array} { l } { \left[ \begin{array} { l l l } - 114 & 36 & 9 \end{array} \right] \left[ \begin{array} { l l l } - 45 & - 9 & 27 \end{array} \right] \left[ \begin{array} { l l l } - 81 & 69 & 6 \end{array} \right] } \\ { \left[ \begin{array} { l l l } - 39 & - 33 & 36 \end{array} \right] \left[ \begin{array} { l l l } - 12 & 30 & - 30 \end{array} \right] } \end{array} B)Uncoded: \begin{array} { l } { \left[ \begin{array} { l l l } 20 & 23 & 15 \end{array} \right] \left[ \begin{array} { l l l } 0 & 9 & 6 \end{array} \right] \left[ \begin{array} { l l l } 0 & 2 & 25 \end{array} \right] \left[ \begin{array} { l l l } 0 & 12 & 1 \end{array} \right] } \\ \begin{array} { l l l l l l l l l l l l } T & \text { W } & \text { O } &&& \text { IF } &&&& \text { B Y } &&& \text { L A} \end{array} \\ { \left[ \begin{array} { l l l } 14 & 4 & 0 \end{array} \right] } \\ \mathrm { N } \mathrm { D } \\ \end{array} Encoded: \begin{array} { l } { \left[ \begin{array} { l l l } - 81 & 69 & 6 \end{array} \right] \left[ \begin{array} { l l l } - 39 & - 33 & 36 \end{array} \right] \left[ \begin{array} { l l l } - 12 & 30 & - 30 \end{array} \right] } \\ { \left[ \begin{array} { l l l l } - 114 & 36 & 9 \end{array} \right] \left[ \begin{array} { l l l } - 45 & - 9 & 27 \end{array} \right] } \end{array} C)Uncoded: \begin{array} { l } { \left[ \begin{array} { l l l } 20 & 23 & 15 \end{array} \right] \left[ \begin{array} { l l l } 0 & 9 & 6 \end{array} \right] \left[ \begin{array} { l l l } 0 & 2 & 25 \end{array} \right] \left[ \begin{array} { l l l } 0 & 12 & 1 \end{array} \right] } \\ \begin{array} { l l l l l l l l l l l l } T & \text { W } & \text { O } &&& \text { IF } &&&& \text { B Y } &&& \text { L A} \end{array} \\ { \left[ \begin{array} { l l l } 14 & 4 & 0 \end{array} \right] } \\ \mathrm { N } \mathrm { D } \\ \end{array} Encoded: \begin{array} { l } { \left[ \begin{array} { l l l } - 39 & - 33 & 36 \end{array} \right] \left[ \begin{array} { l l l } - 12 & 30 & - 30 \end{array} \right] \left[ \begin{array} { l l l l } - 114 & 36 & 9 \end{array} \right] } \\ { \left[ \begin{array} { l l l } - 45 & - 9 & 27 \end{array} \right] \left[ \begin{array} { l l l } - 81 & 69 & 6 \end{array} \right] } \end{array} D)Uncoded: \begin{array} { l } { \left[ \begin{array} { l l l } 20 & 23 & 15 \end{array} \right] \left[ \begin{array} { l l l } 0 & 9 & 6 \end{array} \right] \left[ \begin{array} { l l l } 0 & 2 & 25 \end{array} \right] \left[ \begin{array} { l l l } 0 & 12 & 1 \end{array} \right] } \\ \begin{array} { l l l l l l l l l l l l } T & \text { W } & \text { O } &&& \text { IF } &&&& \text { B Y } &&& \text { L A} \end{array} \\ { \left[ \begin{array} { l l l } 14 & 4 & 0 \end{array} \right] } \\ \mathrm { N } \mathrm { D } \\ \end{array} Encoded: \begin{array} { l } { \left[ \begin{array} { l l l } - 12 & 30 & - 30 \end{array} \right] \left[ \begin{array} { l l l l } - 114 & 36 & 9 \end{array} \right] \left[ \begin{array} { l l l } - 45 & - 9 & 27 \end{array} \right] } \\ { \left[ \begin{array} { l l l } - 81 & 69 & 6 \end{array} \right] \left[ \begin{array} { l l l l } - 39 & - 33 & 36 \end{array} \right] } \end{array} E)Uncoded: \begin{array} { l } { \left[ \begin{array} { l l l } 20 & 23 & 15 \end{array} \right] \left[ \begin{array} { l l l } 0 & 9 & 6 \end{array} \right] \left[ \begin{array} { l l l } 0 & 2 & 25 \end{array} \right] \left[ \begin{array} { l l l } 0 & 12 & 1 \end{array} \right] } \\ \begin{array} { l l l l l l l l l l l l } T & \text { W } & \text { O } &&& \text { IF } &&&& \text { B Y } &&& \text { L A} \end{array} \\ { \left[ \begin{array} { l l l } 14 & 4 & 0 \end{array} \right] } \\ \mathrm { N } \mathrm { D } \\ \end{array} Encoded: \begin{array} { l } { \left[ \begin{array} { l l l } - 45 & - 9 & 27 \end{array} \right] \left[ \begin{array} { l l l } - 81 & 69 & 6 \end{array} \right] \left[ \begin{array} { l l l } - 39 & - 33 & 36 \end{array} \right] } \\ { \left[ \begin{array} { l l l } - 12 & 30 & - 30 \end{array} \right] \left[ \begin{array} { l l l } - 114 & 36 & 9 \end{array} \right] } \end{array}$

\begin{array} { l } { \left[ \begin{array} { l l l } 20 & 23 & 15\end{array} \right] \left[ \begin{array} { l l l } 0 & 9 & 6\end{array} \right] \left[ \begin{array} { l l l } 0 & 2 & 25\end{array} \right] \left[ \begin{array} { l l l } 0 & 12 & 1\end{array} \right] } \\\begin{array} { l l l l l l l l l l l l } T & \text { W } & \text { O } &&& \text { IF } &&&& \text { B Y } &&& \text { L A}\end{array} \\{ \left[ \begin{array} { l l l } 14 & 4 & 0\end{array} \right] } \\\mathrm { N } \mathrm { D } \\\end{array}

Encoded:

\begin{array} { l } { \left[ \begin{array} { l l l } - 81 & 69 & 6\end{array} \right] \left[ \begin{array} { l l l } - 39 & - 33 & 36\end{array} \right] \left[ \begin{array} { l l l } - 12 & 30 & - 30\end{array} \right] } \\{ \left[ \begin{array} { l l l l } - 114 & 36 & 9\end{array} \right] \left[ \begin{array} { l l l } - 45 & - 9 & 27\end{array} \right] }\end{array}

C)Uncoded:

\begin{array} { l } { \left[ \begin{array} { l l l } 20 & 23 & 15\end{array} \right] \left[ \begin{array} { l l l } 0 & 9 & 6\end{array} \right] \left[ \begin{array} { l l l } 0 & 2 & 25\end{array} \right] \left[ \begin{array} { l l l } 0 & 12 & 1\end{array} \right] } \\\begin{array} { l l l l l l l l l l l l } T & \text { W } & \text { O } &&& \text { IF } &&&& \text { B Y } &&& \text { L A}\end{array} \\{ \left[ \begin{array} { l l l } 14 & 4 & 0\end{array} \right] } \\\mathrm { N } \mathrm { D } \\\end{array}

Encoded:

\begin{array} { l } { \left[ \begin{array} { l l l } - 39 & - 33 & 36\end{array} \right] \left[ \begin{array} { l l l } - 12 & 30 & - 30\end{array} \right] \left[ \begin{array} { l l l l } - 114 & 36 & 9\end{array} \right] } \\{ \left[ \begin{array} { l l l } - 45 & - 9 & 27\end{array} \right] \left[ \begin{array} { l l l } - 81 & 69 & 6\end{array} \right] }\end{array}

D)Uncoded:

\begin{array} { l } { \left[ \begin{array} { l l l } 20 & 23 & 15\end{array} \right] \left[ \begin{array} { l l l } 0 & 9 & 6\end{array} \right] \left[ \begin{array} { l l l } 0 & 2 & 25\end{array} \right] \left[ \begin{array} { l l l } 0 & 12 & 1\end{array} \right] } \\\begin{array} { l l l l l l l l l l l l } T & \text { W } & \text { O } &&& \text { IF } &&&& \text { B Y } &&& \text { L A}\end{array} \\{ \left[ \begin{array} { l l l } 14 & 4 & 0\end{array} \right] } \\\mathrm { N } \mathrm { D } \\\end{array}

Encoded:

\begin{array} { l } { \left[ \begin{array} { l l l } - 12 & 30 & - 30\end{array} \right] \left[ \begin{array} { l l l l } - 114 & 36 & 9\end{array} \right] \left[ \begin{array} { l l l } - 45 & - 9 & 27\end{array} \right] } \\{ \left[ \begin{array} { l l l } - 81 & 69 & 6\end{array} \right] \left[ \begin{array} { l l l l } - 39 & - 33 & 36\end{array} \right] }\end{array}

E)Uncoded:

\begin{array} { l } { \left[ \begin{array} { l l l } 20 & 23 & 15\end{array} \right] \left[ \begin{array} { l l l } 0 & 9 & 6\end{array} \right] \left[ \begin{array} { l l l } 0 & 2 & 25\end{array} \right] \left[ \begin{array} { l l l } 0 & 12 & 1\end{array} \right] } \\\begin{array} { l l l l l l l l l l l l } T & \text { W } & \text { O } &&& \text { IF } &&&& \text { B Y } &&& \text { L A}\end{array} \\{ \left[ \begin{array} { l l l } 14 & 4 & 0\end{array} \right] } \\\mathrm { N } \mathrm { D } \\\end{array}

Encoded:

\begin{array} { l } { \left[ \begin{array} { l l l } - 45 & - 9 & 27\end{array} \right] \left[ \begin{array} { l l l } - 81 & 69 & 6\end{array} \right] \left[ \begin{array} { l l l } - 39 & - 33 & 36\end{array} \right] } \\{ \left[ \begin{array} { l l l } - 12 & 30 & - 30\end{array} \right] \left[ \begin{array} { l l l } - 114 & 36 & 9\end{array} \right] }\end{array}

Solve the System of Linear Equations {x−2y=32x−3y=−4\left\{ \begin{array} { l } x - 2 y = 3 \\2 x - 3 y = - 4\end{array} \right.{x−2y=32x−3y=−4​

Multiple Choice

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Solve the System of Linear Equations $\left\{ \begin{array} { l } x - 2 y = 3 \\2 x - 3 y = - 4\end{array} \right.$

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