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Given A = [(1,-1,1),(1,-2,-2),(2,1,3)] a...

Given A = `[(1,-1,1),(1,-2,-2),(2,1,3)]` and B =`[(-4,4,4),(-7,1,3),(5,-3,-1)]`, find AB and use this result I solving the following system of equations :
x - y + z = 4, x - 2y -2z = 9 and 2x + y + 3z = 1

Text Solution

Verified by Experts

The correct Answer is:
`[((-18)/(7)),((10)/(7)),((19)/(7))]`
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