| IB HL - Matrices |
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| Definition of a matrix |
- Column, row, order, element.
- Simple everyday uses of metrics.
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| Algebra of matrices |
- Addition and subtraction of matrices.
- Multiplying by a scalar.
- Multiplication of 2x2 matrices.
- Multiplication of 3x3 matrices.
- The identity matrix.
- The zero matrix.
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| Determinants and inverses |
- Determinant of a 2x2 matrix.
- The inverse of a 2x2 matrix.
- Determinant of a 3x3 matrix.
- The inverse of a 3x3 matrix.
- Conditions for an inverse matrix to exist.
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| Solutions of 3 unknowns |
- Using simultaneous equations in matrices to find 2 unknowns.
- Using simultaneous equations in matrices to find 3 unknowns.
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| Conditions for solutions |
- Finding the condition to find unique, no solutions, or an infinity of solutions.
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