724 prompts matching "prove an argument invalid using a truth table"
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WAEC Prep: Solving an exponential equation by taking logarithms of both sides
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Learn: What a sequence is, and what a term means
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WAEC Prep: A finite sequence and an infinite sequence
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Common Mistakes: The Fibonacci sequence and the rule behind it
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Final Revision: Describing a sequence in words and then in symbols
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Learn: What makes a sequence an arithmetic progression
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Worked Example: Finding the common difference of an arithmetic progression
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Quiz: The formula for the nth term of an arithmetic progression
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WAEC Prep: Finding how many terms an arithmetic progression has
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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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Learn: The formula for the sum of the first n terms of an arithmetic progression
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Practice: Finding n when the sum of an arithmetic progression is given
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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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Final Revision: A savings problem modelled by an arithmetic progression
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Spot My Mistake: Finding the common ratio when the third and sixth terms are given
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Common Mistakes: Inserting a geometric mean between two numbers
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Worked Example: Which form of the sum formula to use when r is less than one
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Show All Working: The sum to infinity of a geometric progression, and when it exists
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