1,334 prompts matching "Quiz: A negative value of b in the quadratic formula"
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WAEC Prep: The conditions for a particle under three forces to be in equilibrium
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WAEC Prep: A lamp hanging from two wires, solved by Lami's theorem
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Learn: Finding two unknown forces by Lami's theorem
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Spot My Mistake: Why the probabilities in a distribution must sum to one
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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 four conditions a binomial situation must satisfy
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Explain Back: Testing whether data are Poisson by comparing mean and variance
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Spot My Mistake: Reading a probability from the standard normal table
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WAEC Prep: Finding the mean or the standard deviation from a given probability
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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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Worked Example: The distance between two points in three dimensions
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WAEC Prep: The distance between two points from their position vectors
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Learn: Subtracting one vector from another
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WAEC Prep: The dot product used to find the work done by a force
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WAEC Prep: Showing a triangle is right-angled using the dot product
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WAEC Prep: Finding the angle between two vectors from their dot product
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Practice: Deciding whether a point lies on a given line
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WAEC Prep: The resultant force on a particle given in i and j form
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Spot My Mistake: The equilibrium condition written in vector form
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