376 prompts matching "Showing distributivity fails by a counter-example"
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Worked Example: Matching each force to the sine of the angle opposite it
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Learn: Finding two unknown forces by Lami's theorem
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Worked Example: Finding a particular term of a binomial expansion
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Worked Example: The probability of no events at all in a Poisson distribution
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Explain Back: Testing whether data are Poisson by comparing mean and variance
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WAEC Prep: Comparing two values from different normal distributions by z-score
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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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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 magnitude of a vector after multiplication by a scalar
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Worked Example: Finding the unit vector in the direction of a given vector
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Worked Example: The position vector of the midpoint of AB
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Worked Example: The triangle law of vector addition
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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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Worked Example: Testing two vectors for perpendicularity
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Worked Example: The powers of i, and the cycle they follow
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WAEC Prep: Multiplying a complex number by a real number
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WAEC Prep: Dividing by a purely imaginary number
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Spot My Mistake: Dividing one complex number by another using the conjugate
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