1,334 prompts matching "Sum of the first n terms of an arithmetic series"
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WAEC Prep: The three unknowns a rigid body problem usually carries
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WAEC Prep: The two conditions for a rigid body to be in equilibrium
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Learn: Choosing the point about which to take moments
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WAEC Prep: Calculating a moment as force times perpendicular distance
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WAEC Prep: A particle in equilibrium on a smooth inclined plane
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WAEC Prep: The conditions for a particle under three forces to be in equilibrium
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Explain Back: A particle hanging from two strings set at different angles
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Learn: Finding two unknown forces by Lami's theorem
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Explain Back: A probability distribution table for a discrete random variable
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WAEC Prep: The four conditions a binomial situation must satisfy
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Quiz: The situations a Poisson distribution models
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Explain Back: Finding n and p from a given mean and variance
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Learn: Finding lambda from a stated mean
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WAEC Prep: Why the total area under the normal curve is one
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WAEC Prep: The probability that a normal variable lies below a given value
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Learn: The probability that a normal variable lies between two values
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WAEC Prep: A question whose wording hides which distribution is meant
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WAEC Prep: Choosing between a binomial and a Poisson model
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Spot My Mistake: When the normal distribution may approximate the binomial
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Worked Example: The continuity correction when approximating a discrete distribution
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