Considerando as matrizes?
Considerando as matrizes
A= 0 1
1 0
e B= 1 0
0 1
calcule (A -2B).A
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Considerando as matrizes
A= 0 1
1 0
e B= 1 0
0 1
calcule (A -2B).A
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Verified answer
A=
[ 0 1 ]
[ 1 0 ]
B=
[ 1 0 ]
[ 0 1 ]
2B =
[ 2 0 ]
[ 0 2 ]
A-2B =
[ 0 1 ] [ 2 0 ]
[ 1 0 ]-[ 0 2 ] =
[-2 1 ]
[ 1 -2 ]
(A-2B)A =
[-2 1 ] [ 0 1 ]
[ 1 -2 ][ 1 0 ] =
[-2•0 +1•1 ……. -2•1 +1•0 ]
[ 1•0 -2•1 …….... 1•1 -2•0 ] =
[ 1 -2 ]
[-2 1 ]