1,326 prompts matching "Multi-part exam question on factorising trinomials"
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Explain Back: Why the order of the letters matters in a matrix product
I have just studied why the order of the letters matters in a matrix product in my SS3 Fur
Quiz: Solving AX equals B and XA equals B by different routes
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Practice: The transpose of a 2 by 3 matrix
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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
Act as my SS3 Further Mathematics tutor. Work a question on a symmetric matrix, equal to i
Quiz: The zero matrix, and how it differs from nought in arithmetic
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Practice: Evaluating AB minus BA
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Explain Back: The determinant of a product as the product of the determinants
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Practice: The sign pattern of the cofactors in a 3 by 3 determinant
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Spot My Mistake: Forming the determinant Dx by replacing the first column
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Explain Back: What a coefficient determinant of nought says about the system
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Practice: Turning a minor into a cofactor with the sign rule
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Explain Back: Writing out the full matrix of cofactors
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Explain Back: Finding the adjoint of a 2 by 2 matrix quickly
I have just studied finding the adjoint of a 2 by 2 matrix quickly in my SS3 Further Mathe
Spot My Mistake: Finding the adjoint of a 3 by 3 matrix
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Learn: Swapping and negating the entries when inverting a 2 by 2 matrix
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Practice: Why a 2 by 2 matrix with determinant nought cannot be inverted
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Learn: The order of the steps in inverting a 3 by 3 matrix
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Learn: Inertia, and what mass actually measures
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Quiz: Why mass stays the same wherever the body is taken
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