509 prompts matching "When Cramer's rule is quicker than elimination"
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Final Revision: Describing a sequence in words and then in symbols
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Spot My Mistake: Finding the common difference from two given terms
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Common Mistakes: An arithmetic progression with a negative common difference
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Final Revision: Inserting an arithmetic mean between two numbers
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Spot My Mistake: The sum of an arithmetic progression with a negative common difference
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Common Mistakes: Proving the sum formula by pairing the terms
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Final Revision: A savings problem modelled by an arithmetic progression
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Common Mistakes: Inserting a geometric mean between two numbers
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Spot My Mistake: A compound interest problem modelled by a geometric progression
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Common Mistakes: A bouncing ball problem, and the total distance travelled
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Final Revision: Proving the sum formula for a geometric progression
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Practice: Reversing the sign when multiplying by a negative number
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Spot My Mistake: Solving a linear inequality that contains a fraction
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Final Revision: A word problem that leads to a linear inequality
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Learn: Factorising a quadratic before solving the inequality
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Common Mistakes: A quadratic inequality that has to be rearranged first
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Final Revision: A word problem that leads to a quadratic inequality
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Practice: Solving modulus of x greater than a
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Explain Back: Solving an inequality such as modulus of 2x minus 1 less than 5
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Spot My Mistake: The graph of y equals modulus of x
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