730 prompts matching "Testing an argument for validity by truth table"
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Common Mistakes: Rationalising when both terms of the denominator are surds
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Common Mistakes: A surd equation that has no real solution
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WAEC Prep: Writing a binary operation rule from a description in words
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Common Mistakes: A binary operation that is ordinary addition in disguise
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Final Revision: Deciding whether a given rule really is a binary operation
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Common Mistakes: Closure on a set of three elements under a stated rule
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WAEC Prep: A rule where distributivity holds one way only
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Common Mistakes: Distributivity on a set of three elements
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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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WAEC Prep: Evaluating 8 to the power two-thirds
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WAEC Prep: Why the logarithm of a negative number does not exist
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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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Common Mistakes: A logarithmic equation that becomes a quadratic
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WAEC Prep: A word problem about seats in the rows of a hall
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WAEC Prep: A geometric progression with a negative common ratio
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Final Revision: Deciding whether a given sequence is a geometric progression
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