Question

A=[-1 -2 -2]
[2 1 -2 ]
[2 -2 1 ]. Adjoint of A is 3A'. Find A-1

Answer 1

Answer:

_1_2_2

[21_2]=19

[2_21]=19

therefore .. 21_2=19 . 2_21=19

so.. Ans is Adjoint of A_1 =19

Step-by-step explanation:

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