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Matrix Trace 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 `Trace(A)` ... `A=[[3,1,1],[-1,2,1],[1,1,1]]`Solution:`trace(A)` | = | `trace` | | `3` | `1` | `1` | | | `-1` | `2` | `1` | | | `1` | `1` | `1` | |
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`=3+2+1` `=6`
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