1,226 prompts matching "IGCSE practice: A curve with no real roots"
Practice set: Equating the indices once the bases agree
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Spot my mistake: An indicial equation with a negative solution
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Worked example: An indicial equation solved with logarithms
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WAEC pitfalls: Equating indices when the bases have not been matched
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Practice set: Choosing the ratio that fits the information given
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Spot my mistake: Finding an angle with an inverse ratio
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Nigerian scenario: Measuring a height by trigonometry in a Nigerian setting
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Practice set: The logarithm of one, and of the base itself
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Word problem: Evaluating a logarithm without a table
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Practice set: Using antilogarithms to return to the number
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Nigerian scenario: A calculation from Nigerian trade done with logarithms
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Practice set: Adding and subtracting in modular arithmetic
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Practice set: The empty set and the universal set
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WAEC pitfalls: Writing a set with its elements repeated
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Exam timing: A timed set of set notation questions
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Practice set: The difference of two sets
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Word problem: Solving a survey problem with a Venn diagram
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Practice set: Conjunction, and when it is true
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Practice set: The truth table for conjunction and disjunction
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Practice set: Changing the subject when the letter is inside a bracket
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