1,331 prompts matching "find the gradient of y = x^3 - 4x at the point where x = 2"
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Spot My Mistake: Why friction does not depend on the area of contact
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Spot My Mistake: The moment of a force whose line of action is not perpendicular
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Explain Back: The units of a moment, and why they are newton metres
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Worked Example: The total moment of three parallel forces about one end
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Learn: The algebraic sum of moments when the senses differ
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Quiz: A rod resting against a wall, and the concurrence of its three forces
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Learn: Finding two unknown forces by Lami's theorem
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WAEC Prep: The four conditions a binomial situation must satisfy
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Spot My Mistake: The probability of exactly r successes in n trials
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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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Practice: The variance of a binomial distribution as npq
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Learn: Finding lambda from a stated mean
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Learn: The mean, median and mode of a normal distribution
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WAEC Prep: The probability that a normal variable exceeds the mean by more than one standard deviation
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WAEC Prep: The probability that a normal variable lies below a given value
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Quiz: The probability in the upper tail of a normal distribution
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Quiz: Reading the wording of a question to decide which distribution applies
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WAEC Prep: The zero vector, and what it means
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Practice: The components of a vector given its magnitude and direction
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