742 prompts matching "Structured question: find k so a cubic has a repeated root"
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Learn: The formula for the sum of the first n terms of an arithmetic progression
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Worked Example: The alternative sum formula that uses the last term
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Common Mistakes: Proving the sum formula by pairing the terms
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Learn: What makes a sequence a geometric progression
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Common Mistakes: Inserting a geometric mean between two numbers
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Learn: The formula for the sum of the first n terms of a geometric progression
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Worked Example: Which form of the sum formula to use when r is less than one
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Common Mistakes: A bouncing ball problem, and the total distance travelled
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Learn: The four inequality symbols, and what each one means
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Worked Example: Adding or subtracting the same number on both sides
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Common Mistakes: A double inequality such as 2 less than x less than 7
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Worked Example: The critical values of a quadratic inequality
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Learn: What the modulus of a number means
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IGCSE Additional Maths Y10: A mapping diagram, and what it shows — Common Mistakes
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IGCSE Additional Maths Y10: Showing that f of f inverse of x gives x back — Common Mistakes
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IGCSE Additional Maths Y10: Sketching the inverse of a quadratic with a restricted domain — Common Mistakes
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IGCSE Additional Maths Y10: Where a modulus graph meets a straight line — Common Mistakes
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IGCSE Additional Maths Y10: The range of a quadratic function — Common Mistakes
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IGCSE Additional Maths Y10: A line that is a tangent to a curve, and the discriminant — Common Mistakes
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IGCSE Additional Maths Y10: The range of values of x that satisfies a stated condition — Common Mistakes
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