1,312 prompts matching "IGCSE Additional Maths Y10: A mapping diagram, and what it shows — Common Mistak"
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WAEC Prep: The difference between pre-multiplying and post-multiplying by a matrix
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Quiz: Solving AX equals B and XA equals B by different routes
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Quiz: The zero matrix, and how it differs from nought in arithmetic
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Worked Example: A singular matrix, and why it has no inverse
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WAEC Prep: A matrix expression with brackets to expand
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Worked Example: What a determinant of nought means for a 2 by 2 matrix
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WAEC Prep: Expanding a 3 by 3 determinant down a column
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WAEC Prep: Expanding a 3 by 3 determinant along the first row
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Quiz: Expanding a 3 by 3 determinant along a row or column containing noughts
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Explain Back: What a coefficient determinant of nought says about the system
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Quiz: Arranging the equations in standard form before applying Cramer's rule
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Spot My Mistake: Checking cofactors by expanding the determinant along a second row
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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: The inverse of a 3 by 3 matrix from its adjoint and its determinant
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WAEC Prep: Reading the solution off the product of the inverse and the constants
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WAEC Prep: Mass, and how it differs from weight
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Worked Example: The units of mass, and the SI unit
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WAEC Prep: The difference between a kilogram and a kilogram weight
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WAEC Prep: The newton, and how it is defined
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Spot My Mistake: The greatest and the least resultant of two given forces
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