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Line 39: Line 39:  
\end{bmatrix} </math> =
 
\end{bmatrix} </math> =
 
<math>\begin{bmatrix}
 
<math>\begin{bmatrix}
a_{11}b_{11}  a_{11}b_{12} a_{12}b_{11} a_{12}b_{12}\\
+
a_{11}b_{11} & a_{11}b_{12} & a_{12}b_{11} & a_{12}b_{12}\\
 +
a_{11}b_{21} & a_{11}b_{22} & a_{12}b_{21} & a_{12}b_{22}\\
 +
a_{21}b_{11} & a_{21}b_{12} & a_{22}b_{11} & a_{22}b_{12}\\
 +
a_{21}b_{21} & a_{21}b_{22} & a_{22}b_{21} & a_{22}b_{22}
 
\end{bmatrix} </math>
 
\end{bmatrix} </math>
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