1,334 prompts matching "Sum of an arithmetic series given the first and last term"
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WAEC Prep: Why one component vanishes when the direction is chosen well
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WAEC Prep: The forces on a body resting on a rough horizontal plane
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Worked Example: Marking the weight, the normal reaction and the friction on a diagram
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Explain Back: The forces acting on a body hanging from two strings
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Explain Back: The order in which the forces are drawn round the triangle
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Explain Back: Why the total moment about any point must be nought
I have just studied why the total moment about any point must be nought in my SS3 Further
WAEC Prep: Friction, and the direction in which it acts
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Explain Back: Locating the point of concurrence on a diagram
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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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WAEC Prep: The Poisson formula, and what lambda stands for
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Explain Back: Testing whether data are Poisson by comparing mean and variance
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Quiz: The area under the normal curve, and what it represents
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WAEC Prep: The standard normal distribution, with mean nought and variance one
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Spot My Mistake: Reading a probability from the standard normal table
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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 zero vector, and what it means
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WAEC Prep: A three-dimensional vector parallel to another
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