1,333 prompts matching "Checking an inverse by working the operation both ways"
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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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Quiz: Reading the wording of a question to decide which distribution applies
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WAEC Prep: Writing a two-dimensional vector in i and j form
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WAEC Prep: The position of a point in space written as a vector
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WAEC Prep: Writing a three-dimensional vector in i, j and k form
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Quiz: The direction cosines of a vector in three dimensions
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WAEC Prep: The magnitude of a two-dimensional vector
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WAEC Prep: The unit vector in the direction of a displacement
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WAEC Prep: A unit vector, and what makes it a unit
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Worked Example: Finding the unit vector in the direction of a given vector
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WAEC Prep: The position vector of a point dividing a line in a ratio
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WAEC Prep: The position vector of a point relative to the origin
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Spot My Mistake: The vector from A to B as the difference of two position vectors
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Worked Example: The position vector of the midpoint of AB
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WAEC Prep: The parallelogram law of vector addition
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WAEC Prep: The dot product of a vector with itself
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WAEC Prep: The dot product worked out from components
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WAEC Prep: The parameter in the vector equation of a line
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