1,324 prompts matching "IGCSE Additional Maths Y10: Solving 3 to the power 2x minus 1 equals 20 — Show A"
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Practice: A diagonal matrix
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Worked Example: A singular matrix, and why it has no inverse
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WAEC Prep: Evaluating A squared minus 2A
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Practice: Evaluating AB minus BA
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Quiz: Finding an unknown entry from a stated matrix equation
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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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Quiz: Expanding a 3 by 3 determinant along a row or column containing noughts
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WAEC Prep: When Cramer's rule is quicker than elimination
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Spot My Mistake: Checking a Cramer's rule solution by substituting back
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Practice: Why a 2 by 2 matrix with determinant nought cannot be inverted
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Quiz: Checking a 3 by 3 inverse by multiplication
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WAEC Prep: Simultaneous equations with fractional coefficients solved by matrix
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WAEC Prep: A three-unknown system arising from a word problem
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Learn: Inertia, and what mass actually measures
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Spot My Mistake: Compounding three forces acting at one point
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WAEC Prep: Two forces acting in opposite directions
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Explain Back: Showing that a system of concurrent forces is in equilibrium
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Learn: A space diagram and a force diagram drawn side by side
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WAEC Prep: A rigid body held in equilibrium by four forces
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