755 prompts matching "Practice: The sign pattern of the cofactors in a 3 by 3 determinant"
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Final Revision: Describing a sequence in words and then in symbols
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Quiz: The formula for the nth term of an arithmetic progression
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Learn: The formula for the sum of the first n terms of an arithmetic progression
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Quiz: The sum of the first fifty natural numbers
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Spot My Mistake: The sum of an arithmetic progression with a negative common difference
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Quiz: The formula for the nth term of a geometric progression
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Final Revision: Deciding whether a given sequence is a geometric progression
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Learn: The formula for the sum of the first n terms of a geometric progression
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Worked Example: Which form of the sum formula to use when r is less than one
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Quiz: The sum of the first six terms of a given geometric progression
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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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Learn: The four inequality symbols, and what each one means
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Quiz: Multiplying both sides by a positive number
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Learn: Factorising a quadratic before solving the inequality
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Learn: What the modulus of a number means
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Quiz: Solving modulus of x less 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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