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Semi-worked example of inverting a 3x3 matrix using cofactor, adjoint and determinant.
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Taxonomy: mathcentre
Taxonomy: Kind of activity
Taxonomy: Context
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| Mark Patterson | said | Ready to use | 4 years, 6 months ago |
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Mark Patterson 4 years, 6 months ago
Published this.Mark Patterson 4 years, 6 months ago
Gave some feedback: Ready to use
Mark Patterson 4 years, 6 months ago
Created this.There is only one version of this question that you have access to.
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| Name | Type | Generated Value |
|---|
| ma | matrix |
Matrix of size 3×3
|
||||
| det_ma | number |
-10
|
||||
| cofm | matrix |
Matrix of size 3×3
|
||||
| cofn | matrix |
Matrix of size 3×3
|
Generated value: matrix
matrix([1,6,6],[-2,7,6],[5,1,2])
→ Used by:
- cofm
- det_ma
- Statement
- "Step 1: Determinant" - Minimum accepted value
- "Step 1: Determinant" - Maximum accepted value
- "Step 2a: Cofactor elements" → "Unnamed step" - prompt
- "Step 2a: Cofactor elements" → "First element" - prompt
- "Step 2a: Cofactor elements" → "Second element" - prompt
- "Step 2a: Cofactor elements" → "Third element" - prompt
- "Step 4:" - Correct answer
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