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Solution
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Solution provided by AtoZmath.com
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Matrix Determinant calculator
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1. `[[2,3,1],[0,5,6],[1,1,2]]`
2. `[[2,1,-1],[1,0,-1],[1,1,2]]`
3. `[[3,1,1],[-1,2,1],[1,1,1]]`
4. `[[5,6,1],[0,2,3],[1,1,2]]`
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Example1. Find `| A |` ... `A=[[5,6],[1,2]]`Solution:`=5 × 2 - 6 × 1` `=10 -6` `=4`
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