1,297 prompts matching "Forming an equation whose roots are alpha plus one and beta plus one"
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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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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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WAEC Prep: The determinant of a matrix with a row of noughts
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WAEC Prep: The determinant of the identity matrix
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WAEC Prep: The determinant of a 2 by 2 matrix as ad minus bc
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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: The determinant of a 3 by 3 matrix with two equal rows
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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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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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WAEC Prep: When Cramer's rule is quicker than elimination
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WAEC Prep: The determinant Dz in a system of three unknowns
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Explain Back: What a coefficient determinant of nought says about the system
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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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