755 prompts matching "Structured question: combination problem with 'at least' condition"
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Common Mistakes: Checking an inverse by working the operation both ways
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Common Mistakes: Why the index laws need the bases to match
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Worked Example: Rewriting a negative index as a fraction
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Show All Working: Simplifying an expression that mixes the index types
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Worked Example: Solving an indicial equation where one side must be factorised first
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Common Mistakes: An indicial equation solved by substitution
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Worked Example: Writing an index statement as a logarithm
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Practice: Evaluating log to base 2 of 8
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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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Worked Example: Converting a logarithm to base ten so that tables can be used
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Practice: The relation between log a of b and log b of a
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Explain Back: A logarithmic equation written in two different bases
I have just studied a logarithmic equation written in two different bases in my SS1 Furthe
Common Mistakes: A logarithmic equation that becomes a quadratic
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Practice: Finding the nth term of a quadratic sequence
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Explain Back: Spotting the pattern in a sequence of squares or cubes
I have just studied spotting the pattern in a sequence of squares or cubes in my SS1 Furth
Worked Example: The alternative sum formula that uses the last term
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Worked Example: Finding the common ratio of a geometric progression
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Practice: Reversing the sign when multiplying by a negative number
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Explain Back: Solving a linear inequality that contains brackets
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