1,332 prompts matching "Explain sum and product of roots back to me"
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WAEC Prep: Comparing two values from different normal distributions by z-score
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Learn: The probability that a normal variable lies between two values
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Practice: Using the normal tables when the z-score is negative
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WAEC Prep: When a Poisson distribution approximates a binomial one
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WAEC Prep: A question whose wording hides which distribution is meant
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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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Practice: Deciding whether a point lies on a given line
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WAEC Prep: Adding three complex numbers
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Quiz: Subtracting one complex number from another
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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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Worked Example: Squaring a complex number
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WAEC Prep: The argument measured in radians
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WAEC Prep: The polar form written as r cos theta plus i r sin theta
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WAEC Prep: Multiplying two complex numbers in polar form
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Quiz: Writing a complex number in polar form
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WAEC Prep: De Moivre's theorem used with a negative index
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