1,320 prompts matching "Finding the identity element from a rule such as a*b = a + b - 3"
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Learn: Solving two simultaneous equations by Cramer's rule
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WAEC Prep: Setting out Cramer's rule for three simultaneous equations
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Spot My Mistake: Checking a Cramer's rule solution by substituting back
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Practice: What a singular coefficient matrix says about the equations
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WAEC Prep: A three-unknown system arising from a word problem
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Quiz: Solving three simultaneous equations with the inverse matrix
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Practice: Comparing the inverse method with elimination for three equations
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Practice: The value of g used in Nigerian examination papers
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Practice: The parallelogram law of forces
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Practice: Choosing the most convenient pair of directions to resolve along
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Quiz: The magnitude of the resultant of several coplanar forces
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Practice: The direction of the resultant of several coplanar forces
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Practice: Why the forces must sum to nought in two perpendicular directions
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Quiz: The coefficient of friction between two surfaces
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Practice: Limiting friction, and the greatest value it can reach
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Quiz: The point about which the total moment of a set of forces vanishes
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Quiz: A rod resting against a wall, and the concurrence of its three forces
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Explain Back: A particle hanging from two strings set at different angles
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Worked Example: Finding a particular term of a binomial expansion
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Quiz: The situations a Poisson distribution models
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