1,333 prompts matching "find the centre and radius of the circle x^2+y^2-4x+6y-3=0"
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Worked Example: The units of mass, and the SI unit
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Spot My Mistake: The greatest and the least resultant of two given forces
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Explain Back: The units of a moment, and why they are newton metres
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WAEC Prep: The resultant moment of a couple and a force together
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WAEC Prep: The moment of two equal and opposite parallel forces
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WAEC Prep: The triangle of forces and concurrence taken together
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Quiz: A rod resting against a wall, and the concurrence of its three forces
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WAEC Prep: The variance of a discrete random variable
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Learn: The expectation of a discrete random variable
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WAEC Prep: The probabilities of nought, one and two successes read off an expansion
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Learn: The standard deviation of a binomial distribution
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WAEC Prep: Why the mean and the variance of a Poisson distribution are equal
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Quiz: The standard deviation of a Poisson distribution
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WAEC Prep: The shape and the symmetry of the normal curve
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Learn: The mean, median and mode of a normal distribution
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Spot My Mistake: The proportion of a normal distribution within one, two and three standard deviations
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WAEC Prep: Finding the mean or the standard deviation from a given probability
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Practice: The components of a vector given its magnitude and direction
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Worked Example: Finding the unit vector in the direction of a given vector
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Learn: The angle between a vector and one of the axes
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