755 prompts matching "An argument written in words and tested for validity"
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Worked Example: Finding the identity element from a rule such as a*b = a + b - 3
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WAEC Prep: The inverse of the identity element itself
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WAEC Prep: Applying two index laws inside one expression
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Common Mistakes: Why the index laws need the bases to match
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Final Revision: Evaluating a numerical expression using the index laws
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Worked Example: Rewriting a negative index as a fraction
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WAEC Prep: Evaluating 8 to the power two-thirds
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Show All Working: The common logarithm, to base ten
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Common Mistakes: Reading a logarithm from a table
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Worked Example: The law for the logarithm of a quotient
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Show All Working: Solving a simple logarithmic equation
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Common Mistakes: Rejecting a root that makes a logarithm undefined
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Final Revision: Proving a logarithmic identity from the laws
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Show All Working: Comparing logarithms given in different bases
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Worked Example: Writing out the terms of a sequence from its nth term
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Show All Working: Deciding whether a given number is a term of a sequence
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Show All Working: Deciding whether a number belongs to a given arithmetic progression
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Common Mistakes: An arithmetic progression with a negative common difference
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Worked Example: The alternative sum formula that uses the last term
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Show All Working: The sum of the terms lying between two given positions
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