1,333 prompts matching "find the centre and radius of the circle x^2+y^2-4x+6y-3=0"
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Practice: Why the forces must sum to nought in two perpendicular directions
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Learn: Choosing the point about which to take moments
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WAEC Prep: The conditions for a particle under three forces to be in equilibrium
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WAEC Prep: A lamp hanging from two wires, solved by Lami's theorem
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Explain Back: A probability distribution table for a discrete random variable
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Spot My Mistake: Why the probabilities in a distribution must sum to one
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WAEC Prep: The four conditions a binomial situation must satisfy
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Quiz: The situations a Poisson distribution models
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WAEC Prep: Why the total area under the normal curve is one
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Worked Example: Finding a value from a given probability by working backwards
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WAEC Prep: The probability that a normal variable lies below a given value
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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: 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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WAEC Prep: Writing a two-dimensional vector in i and j form
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WAEC Prep: A three-dimensional vector parallel to another
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WAEC Prep: Writing a three-dimensional vector in i, j and k form
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WAEC Prep: A unit vector, and what makes it a unit
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WAEC Prep: The distance between two points from their position vectors
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