1,327 prompts matching "Learn: The formula for the sum of the first n terms of an arithmetic progression"
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Common Mistakes: A binary operation defined by arithmetic modulo n
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Spot My Mistake: Squaring a bracket that contains a surd
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Common Mistakes: Solving an exponential equation using logarithms
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Quiz: Finding alpha cubed plus beta cubed
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Show All Working: Solving a cubic equation by factorisation
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Common Mistakes: Adding, subtracting and multiplying two polynomials
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Show All Working: Three roots in arithmetic progression in a cubic
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Common Mistakes: Three roots in geometric progression in a cubic
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Quiz: Solving a quadratic inequality using a sign table
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Spot My Mistake: Arrangements in which two particular objects must be kept apart
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Common Mistakes: Identifying a conic from a general second-degree equation
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Spot My Mistake: An aeroplane in a cross-wind, and its resultant track
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Spot My Mistake: A particle hanging in equilibrium on an elastic string
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Spot my mistake: Treating any vector with small components as a unit vector
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Inequality word problem with a real-life constraint
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Factorising an expression with a common algebraic bracket factor
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What a function is and function notation
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Evaluating a function at a given value
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Evaluating a function at a negative value
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Verifying an inverse function is correct
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