2. Example-2
1. Find `Trace(A)` ...
`A=[[1,2,3],[4,5,6],[7,8,9]]`Solution:| `trace(A)` | = | | `trace` | | `1` | `2` | `3` | | | `4` | `5` | `6` | | | `7` | `8` | `9` | |
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`=1+5+9` `=15`
2. Find `Trace(A)` ...
`A=[[1,1,1],[2,-1,-1],[1,-1,1]]`Solution:| `trace(A)` | = | | `trace` | | `1` | `1` | `1` | | | `2` | `-1` | `-1` | | | `1` | `-1` | `1` | |
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`=1+(-1)+1` `=1`
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