Jeremiah O.

asked • 10/16/16

determinants

if A= (2 3 1)                  (1 2 1 )
       ( 1-1-2)     and B=  (1 1 2 )
       (0  2 1)                  ( 0 0 1)
 
find 2AB. also find the determinant for 2AB

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