Perform the indicated matrix operations where
 + is addition

 * is multiplication

 /\ is meet 

 \/ is join and 

 . is Boolean product


 2  1      -1  1
        +         = 
-1  0       0  3  


-1  1       3  2
        +         = 
 1  2      -2  1  


 2  1      -1  1
        *         = 
-1  0       0  3  


-1  1       3  2
        *         = 
 1  2      -2  1  


 0  1        0  1
        \/          = 
 1  0        1  1  


 0  1        0  1
        /\          = 
 1  0        1  1  


 0  1        0  1
        .          = 
 1  0        1  1  


 1  0  1     1  0 -1

 2 -1  1  +  0  1  2   =

-2  1  0     3  0  1 


-1  0  1     1  0 -1

 2 -1  1  +  0  3  2   =

-2  1  1     2  0  1 


 1  0  1     1  0  0

 2 -1  1  *  0  1  0   =

-2  1  0     0  0  1 


 1  0  1     1  0 -1

 2  0  1  *  0  1  2   =

 1  1  0     3  0  1 


 1  0  1     1  0  1

 1  1  0  .  0  1  1   =

 1  0  0     1  0  1 


For each of the following matrices that has an inverse give its inverse.

 2  1 
      
-1  0 


 2 -4

-1  2


-1  1 
       
 1  2