1,093 prompts matching "IGCSE Additional Maths Y10: Finding a remainder by substitution alone — Explain"
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Spot My Mistake: Why matrix subtraction is not commutative
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Quiz: Solving a matrix equation of the form A plus X equals B
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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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Explain Back: Why the order of the letters matters in a matrix product
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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 column vector
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WAEC Prep: The transpose of a transpose
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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: A skew-symmetric matrix
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WAEC Prep: The identity matrix of order three
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WAEC Prep: The identity matrix, and what it does in a product
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Quiz: The zero matrix, and how it differs from nought in arithmetic
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Practice: A diagonal matrix
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Worked Example: A singular matrix, and why it has no inverse
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WAEC Prep: The order of a matrix formed from a table of data
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WAEC Prep: Stating the order of a product before working it out
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