1,331 prompts matching "Quiz: Selecting from two groups at the same time"
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Explain Back: Showing that AB and BA are usually different for 2 by 2 matrices
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Spot My Mistake: Squaring a 2 by 2 matrix
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Spot My Mistake: Multiplying a 3 by 3 matrix by a 3 by 1 column
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WAEC Prep: Multiplying a matrix by a fraction
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WAEC Prep: The effect of a scalar on the determinant
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WAEC Prep: Multiplying every entry of a matrix by a scalar
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Worked Example: Taking a common factor out of a matrix
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WAEC Prep: Pre-multiplying a column vector by a matrix
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WAEC Prep: Post-multiplying a row vector by a matrix
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WAEC Prep: The transpose of a column vector
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WAEC Prep: The transpose of a transpose
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Spot My Mistake: A symmetric matrix, equal to its own transpose
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WAEC Prep: A skew-symmetric matrix
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Worked Example: A singular matrix, and why it has no inverse
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WAEC Prep: Evaluating A squared minus 2A
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WAEC Prep: A matrix expression with brackets to expand
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Explain Back: Solving a matrix equation containing both a sum and a product
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Worked Example: What a determinant of nought means for a 2 by 2 matrix
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Explain Back: The determinant of a product as the product of the determinants
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WAEC Prep: Expanding a 3 by 3 determinant along the first row
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