1,334 prompts matching "The sum of an arithmetic progression with a negative common difference"
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Worked Example: The weight of a body as mass times g
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Practice: The parallelogram law of forces
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WAEC Prep: Why one component vanishes when the direction is chosen well
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Practice: Choosing the most convenient pair of directions to resolve along
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WAEC Prep: The forces on a body resting on a rough horizontal plane
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Practice: Why the forces must sum to nought in two perpendicular directions
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Worked Example: Drawing the polygon of forces to scale
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WAEC Prep: Friction, and the direction in which it acts
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Worked Example: The moment of a force about a point on its own line of action
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Worked Example: The total moment of three parallel forces about one end
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WAEC Prep: A lamp hanging from two wires, solved by Lami's theorem
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Spot My Mistake: When Lami's theorem may be used, and when it may not
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WAEC Prep: A random variable, and the values it may take
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WAEC Prep: Expanding p plus q, all to the power n, as a probability model
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Worked Example: Finding a particular term of a binomial expansion
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Practice: The probability of at least one success
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WAEC Prep: The Poisson formula, and what lambda stands for
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Practice: The probability of exactly r events in a Poisson distribution
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Worked Example: The probability of no events at all in a Poisson distribution
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Quiz: The area under the normal curve, and what it represents
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