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If A=[{:(9, 7, 3), (5, -1, 4), (6, 8, 2):}]" find "A^(-1) and hence solve the system of equations: 9x+7y+3z=6, 5x-y+4z=1, 6x+8y+2z=4.

Answer»


Answer :`A^(1)=1/(-70)[{:(-34, 10, 31), (14, 0, -21), (46, -30, -44):}]; x=1, y=0, z=-1`.


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