\left. \begin{array} { l | l | l | l | } \hline 18 & { 21.0 } & { 18.7 } & { 19.9 } \\ \hline 19 . & { 20.5 } & { 19.6 } & { 19.8 } \\ \hline 20 . & { 20.6 } & { 16.9 } & { 22.4 } \\ \hline \end{array} \right.
Evaluate
\left(\begin{matrix}18&21&18.7&19.9\\19&20.5&19.6&19.8\\20&20.6&16.9&22.4\end{matrix}\right)
Transpose Matrix
\left(\begin{matrix}18&19&20\\21&20.5&20.6\\18.7&19.6&16.9\\19.9&19.8&22.4\end{matrix}\right)
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