1,318 prompts matching "Practice: Finding n when the sum of a geometric progression is given"
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Show All Working: Solving a quadratic by completing the square
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Worked Example: Finding one over alpha plus one over beta
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Explain Back: Finding alpha squared beta plus alpha beta squared
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Final Revision: Checking a symmetric-function answer by solving the equation outright
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Quiz: The factor theorem, and testing whether x minus a is a factor
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Practice: Factorising a cubic completely once one factor is known
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Spot My Mistake: The relations between roots and coefficients for a quartic
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Final Revision: Checking that the roots found satisfy the original equation
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Show All Working: Solving a pair of simultaneous linear inequalities
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WAEC Prep: Circular permutations of n objects round a table
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Common Mistakes: Arrangements restricted at the first or the last place
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Final Revision: Counting the number plates or codes that can be formed under a rule
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Practice: Choosing a committee that must contain one particular person
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Explain Back: Choosing a committee with a stated number from each of two groups
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Spot My Mistake: The identity that n choose r equals n choose n minus r
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Show All Working: Counting the handshakes, or the lines joining n points
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Common Mistakes: Selections in which at least one of a kind must appear
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Final Revision: Combinations used with the addition and multiplication principles
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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
Act as my WAEC Further Mathematics examiner. I am in SS 3. Set me a question on the half a