1,316 prompts matching "IGCSE Additional Maths Y11: The notation dy by dx, and f dashed of x — Quiz Me"
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Explain Back: Keeping track of the nine entries when multiplying 3 by 3 matrices
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WAEC Prep: The difference between pre-multiplying and post-multiplying by a matrix
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WAEC Prep: Writing the transpose of a matrix by turning rows into columns
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Practice: The transpose of a 2 by 3 matrix
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WAEC Prep: Reading the order of a matrix as rows by columns
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WAEC Prep: The determinant of a 2 by 2 matrix as ad minus bc
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WAEC Prep: The determinant of a 3 by 3 matrix with two equal rows
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WAEC Prep: Expanding a 3 by 3 determinant along the first row
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Practice: The sign pattern of the cofactors in a 3 by 3 determinant
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Worked Example: Evaluating a 3 by 3 determinant by the rule of Sarrus
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Spot My Mistake: Forming the determinant Dx by replacing the first column
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WAEC Prep: The minor of an entry of a 3 by 3 matrix
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Spot My Mistake: Checking cofactors by expanding the determinant along a second row
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Explain Back: Finding the adjoint of a 2 by 2 matrix quickly
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Spot My Mistake: Finding the adjoint of a 3 by 3 matrix
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WAEC Prep: The inverse of a 2 by 2 matrix with a fractional determinant
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WAEC Prep: The inverse of a 2 by 2 matrix as one over the determinant times the adjoint
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Quiz: Checking an inverse by multiplying to get the identity
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WAEC Prep: How long the inverse of a 3 by 3 matrix takes, and how to shorten it
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WAEC Prep: Checking the determinant before attempting a 3 by 3 inverse
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