661 prompts matching "Practice: Using a binomial expansion to approximate a number"
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Explain Back: Finding the first term from the sum and the common difference
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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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Learn: What makes a sequence a geometric progression
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Worked Example: Finding the common ratio of a geometric progression
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Quiz: The formula for the nth term of a geometric progression
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Explain Back: Finding the first term from two given terms of a geometric progression
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Spot My Mistake: Finding the common ratio when the third and sixth terms are given
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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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Quiz: The sum of the first six terms of a given geometric progression
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Explain Back: The sum of a geometric progression with a negative common ratio
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Spot My Mistake: A compound interest problem modelled by a geometric progression
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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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Explain Back: Solving a linear inequality that contains brackets
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Spot My Mistake: Solving a linear inequality that contains a fraction
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Common Mistakes: A double inequality such as 2 less than x less than 7
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Worked Example: The critical values of a quadratic inequality
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