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If A = [(3,4,2),(2,3,5),(1,0,1)]"find A"...

If `A = [(3,4,2),(2,3,5),(1,0,1)]"find A"^(-1)` and hence solve the equations
`3x + 4y + 2z = -1, 2x + 3y + 5z = 7, x + z = 2`.

Text Solution

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The correct Answer is:
`[(x),(y),(z)]= (1)/(-9) [(-27),(-18),(9)]" "rArr" " [(x),(y),(z)] = [(3),(2),(-1)]`
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