Changes

Line 29: Line 29:  
b_{21} & b_{22}  
 
b_{21} & b_{22}  
 
\end{bmatrix} \\
 
\end{bmatrix} \\
 +
||
 
a_{21} \begin{bmatrix}
 
a_{21} \begin{bmatrix}
 
b_{11}      & b_{12}    \\
 
b_{11}      & b_{12}    \\
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