1,332 prompts matching "Roots equal in magnitude but opposite in sign"
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WAEC Prep: Multiplying two 2 by 2 matrices, row into column
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Explain Back: Showing that AB and BA are usually different for 2 by 2 matrices
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Spot My Mistake: Squaring a 2 by 2 matrix
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WAEC Prep: Multiplying a 3 by 3 matrix by the identity matrix
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WAEC Prep: Checking a single entry of a 3 by 3 product
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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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Spot My Mistake: Multiplying a 3 by 3 matrix by a 3 by 1 column
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WAEC Prep: Multiplying a matrix by a fraction
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WAEC Prep: The effect of a scalar on the determinant
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WAEC Prep: Multiplying every entry of a matrix by a scalar
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Worked Example: Taking a common factor out of a matrix
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Quiz: Multiplying a matrix by minus one
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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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WAEC Prep: The difference between pre-multiplying and post-multiplying by a matrix
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Explain Back: Why the order of the letters matters in a matrix product
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WAEC Prep: Writing the transpose of a matrix by turning rows into columns
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Explain Back: The rule that the transpose of a product reverses the order
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WAEC Prep: The identity matrix, and what it does in a product
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