2. Example `[[3,2,4],[2,0,2],[4,2,3]]` (Previous example) | 4. Example `[[2,3],[4,10]]` (Next example) |
3. Example `[[1,1,1],[-1,-3,-3],[2,4,4]]`
Find Pivots of a Matrix ... `[[1,1,1],[-1,-3,-3],[2,4,4]]`
Solution: First apply Gaussian Elimination method to find Pivots
`A` | = | | `1` | `1` | `1` | | | `-1` | `-3` | `-3` | | | `2` | `4` | `4` | |
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`R_2 larr R_2+ R_1`
= | | `1` | `1` | `1` | | | `0` | `-2` | `-2` | | | `2` | `4` | `4` | |
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`R_3 larr R_3-2xx R_1`
= | | `1` | `1` | `1` | | | `0` | `-2` | `-2` | | | `0` | `2` | `2` | |
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`R_3 larr R_3+ R_2`
= | | `1` | `1` | `1` | | | `0` | `-2` | `-2` | | | `0` | `0` | `0` | |
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Pivots are the first non-zero element in each row of this eliminated matrix. `:.` Pivots are `1,-2`
This material is intended as a summary. Use your textbook for detail explanation. Any bug, improvement, feedback then
2. Example `[[3,2,4],[2,0,2],[4,2,3]]` (Previous example) | 4. Example `[[2,3],[4,10]]` (Next example) |
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