1,326 prompts matching "Why the index laws need the bases to match"
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Quiz: The zero matrix as the identity for matrix addition
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Quiz: Solving a matrix equation of the form A plus X equals B
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WAEC Prep: The product of a 2 by 2 matrix with the identity
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WAEC Prep: Multiplying two 2 by 2 matrices, row into column
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Practice: A 2 by 2 matrix multiplied by a column vector
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WAEC Prep: Multiplying a 3 by 3 matrix by the identity matrix
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WAEC Prep: Multiplying two 3 by 3 matrices, row into column
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Explain Back: Keeping track of the nine entries when multiplying 3 by 3 matrices
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Worked Example: The associative law for the product of three matrices
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WAEC Prep: The effect of a scalar on the determinant
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Worked Example: Taking a common factor out of a matrix
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Learn: The distributive law for a scalar over a sum of matrices
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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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Spot My Mistake: Orders that make a product possible one way round but not the other
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WAEC Prep: The transpose of a transpose
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Practice: The transpose of a 2 by 3 matrix
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Explain Back: The rule that the transpose of a product reverses the order
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Spot My Mistake: A symmetric matrix, equal to its own transpose
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WAEC Prep: The identity matrix of order three
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