1. Example `[[8,-6,2],[-6,7,-4],[2,-4,3]]`
1. Find Leibniz formula for determinant ... `[[8,-6,2],[-6,7,-4],[2,-4,3]]`Solution: | `8` | `-6` | `2` | | | `-6` | `7` | `-4` | | | `2` | `-4` | `3` | |
`= 8xx7xx3 - 8xx(-4)xx(-4) - (-6)xx(-6)xx3 + (-6)xx(-4)xx2 + 2xx(-6)xx(-4) - 2xx7xx2 ` `=0`
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