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Solution
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Solution provided by AtoZmath.com
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is Singular Matrix calculator
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 1. `[[1,1,1],[1,1,1],[1,1,1]]`
2. `[[2,1,1],[1,2,1],[1,1,1]]`
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Example1. is Singular Matrix ?
`[[1,1,1],[1,1,1],[1,1,1]]`Solution:A square matrix `A`, such that `|A| = 0`, is called a singular matrix. | `A` | = | | `1` | `1` | `1` | | | `1` | `1` | `1` | | | `1` | `1` | `1` | |
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| `|A|` | = | | `1` | `1` | `1` | | | `1` | `1` | `1` | | | `1` | `1` | `1` | |
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`=1 xx (1 × 1 - 1 × 1) -1 xx (1 × 1 - 1 × 1) +1 xx (1 × 1 - 1 × 1)` `=1 xx (1 -1) -1 xx (1 -1) +1 xx (1 -1)` `=1 xx (0) -1 xx (0) +1 xx (0)` `= 0 +0 +0` `=0` Here, `|A| = 0`, so `A` is a singular matrix
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