755 prompts matching "A pair that gives no real solution at all"
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Worked Example: Reading the symbol used for a binary operation
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Spot My Mistake: A binary operation defined on a set of three elements
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Spot My Mistake: Reading closure off an operation table
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Quiz: Reading commutativity off a symmetrical operation table
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Spot My Mistake: Checking distributivity from two operation tables
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Quiz: Finding the identity element from an operation table
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Worked Example: Rewriting a negative index as a fraction
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Quiz: A negative index on a fraction, and turning it upside down
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Spot My Mistake: A negative fractional index
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Worked Example: Solving an indicial equation where one side must be factorised first
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Spot My Mistake: An indicial equation involving fractional bases
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Worked Example: Writing an index statement as a logarithm
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Quiz: Writing a logarithm as an index statement
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Spot My Mistake: Evaluating an expression using the laws of logarithms
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Quiz: Evaluating log to base 3 of 7 by change of base
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Spot My Mistake: A logarithm to base e, the natural logarithm
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Spot My Mistake: A sequence defined by a recurrence relation
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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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Worked Example: Finding the common ratio of a geometric progression
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