755 prompts matching "Deciding whether a set under an operation forms a group"
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Learn: What an identity element is
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Practice: Why an identity element must work from both sides
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Learn: Reading index notation, the base and the exponent
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Practice: The law for a power raised to another power
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Learn: Why any non-zero number to the power nought is one
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Quiz: A negative index on a fraction, and turning it upside down
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Learn: Solving an equation by writing both sides to the same base
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Quiz: An indicial equation that becomes a quadratic in a power
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Final Revision: Checking an indicial solution by substitution
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Quiz: Writing a logarithm as an index statement
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Final Revision: The characteristic and the mantissa of a logarithm
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Quiz: Evaluating log to base 3 of 7 by change of base
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Practice: The relation between log a of b and log b of a
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Final Revision: Using change of base to prove a stated relation
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Learn: What a sequence is, and what a term means
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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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Final Revision: Inserting an arithmetic mean between two numbers
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Practice: Finding n when the sum of an arithmetic progression is given
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Final Revision: A savings problem modelled by an arithmetic progression
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