1,334 prompts matching "The sum of an arithmetic progression with a negative common difference"
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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: Finding the mean or the standard deviation from a given probability
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Practice: Using the normal tables when the z-score is negative
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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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Worked Example: Finding the unit vector in the direction of a given vector
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Learn: The unit vectors i, j and k
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WAEC Prep: The distance between two points from their position vectors
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Worked Example: The position vector of the midpoint of AB
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Learn: Subtracting one vector from another
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WAEC Prep: The angle between two three-dimensional vectors
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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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WAEC Prep: The resultant force on a particle given in i and j form
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WAEC Prep: The imaginary unit i, and why i squared is minus one
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Quiz: Subtracting one complex number from another
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Spot My Mistake: Dividing one complex number by another using the conjugate
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WAEC Prep: The argument measured in radians
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WAEC Prep: The modulus and the argument taken together
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