1,112 prompts matching "Sum of a geometric series with a negative common ratio"
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Show All Working: Finding a coefficient given a stated relation between the roots
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Quiz: The factor theorem, and testing whether x minus a is a factor
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WAEC Prep: Sketching a cubic from its factorised form
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Show All Working: Solving a cubic equation by factorisation
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Spot My Mistake: The relations between roots and coefficients for a quartic
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Show All Working: Three roots in arithmetic progression in a cubic
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Quiz: Solving a quadratic inequality using a sign table
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WAEC Prep: Writing a solution set in interval notation
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Spot My Mistake: Arrangements in which two particular objects must be kept apart
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Spot My Mistake: The identity that n choose r equals n choose n minus r
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WAEC Prep: Pascal's triangle and the combination numbers in it
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Show All Working: Counting the handshakes, or the lines joining n points
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Learn: The Pythagorean identity, sin squared plus cos squared equals one
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Spot My Mistake: The double angle formula for sine
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Show All Working: The half angle formulae and the t-substitution
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Learn: Solving sin x equals a given value between 0 and 360 degrees
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Spot My Mistake: Solving an equation by first applying a Pythagorean identity
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WAEC Prep: Solving an equation by first applying a double angle formula
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Show All Working: Solving a cos x plus b sin x equals c by the R method
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Quiz: The tangent curve and its asymptotes
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