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Solution
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Solution provided by AtoZmath.com
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Determinant by gaussian elimination calculator
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 1. `[[2,1,3],[4,2,1],[1,3,2]]`
2. `[[3,2,4],[2,0,2],[4,2,3]]`
3. `[[1,0,4,2],[1,2,6,2],[2,0,8,8],[2,1,9,4]]`
4. `[[3,0,0,3,0],[-3,0,-2,0,0],[0,-1,0,0,-3],[0,0,0,3,3],[0,-1,2,0,1]]`
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Example (with steps)1. Find Determinant by gaussian elimination ...
`[[2,1,3],[4,2,1],[1,3,2]]`Solution:Row echelon form Given matrix | | | `2` | `1` | `3` | | | `4` | `2` | `1` | | | `1` | `3` | `2` | |
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`R_2 larr R_2-2xx R_1` | = | | `2` | `1` | `3` | | | `0` | `0` | `-5` | | | `1` | `3` | `2` | |
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`R_3 larr R_3-0.5xx R_1` | = | | `2` | `1` | `3` | | | `0` | `0` | `-5` | | | `0` | `2.5` | `0.5` | |
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After interchanging rows `R_2 harr R_3`, Sign of determinant is changed | = - | | `2` | `1` | `3` | | | `0` | `2.5` | `0.5` | | | `0` | `0` | `-5` | |
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`=-(2*2.5*(-5))` `=25` |
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