SOLUTION: calcule: 3 9 1 1 2 5 1 -1 0 a)A12 b)A23 c)A33

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Question 1041405: calcule:
3 9 1
1 2 5
1 -1 0
a)A12 b)A23 c)A33
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
The first subscript denotes row, the second column.
So A%5B1%2C2%5D would be first row, second column.
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A%5B1%2C2%5D=9
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Do the others the same way.