1,324 prompts matching "A binary operation defined on a set of three elements"
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Explain Back: The forces acting on a body hanging from two strings
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Practice: Why the forces must sum to nought in two perpendicular directions
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Practice: Finding an unknown force from a closed polygon
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Practice: Limiting friction, and the greatest value it can reach
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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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Practice: Using a binomial expansion to approximate a number
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Quiz: The situations a Poisson distribution models
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Explain Back: Testing whether data are Poisson by comparing mean and variance
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Explain Back: Converting a value to a z-score
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Spot My Mistake: When the normal distribution may approximate the binomial
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Quiz: Writing a two-dimensional vector as a column
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Learn: Subtracting one vector from another
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Practice: Deciding whether a point lies on a given line
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Spot My Mistake: The equilibrium condition written in vector form
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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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Practice: Converting a complex number from polar form back to a plus bi
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Explain Back: Forming a quadratic equation with given complex roots
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Explain Back: Differentiating one over x from first principles
I have just studied differentiating one over x from first principles in my SS3 Further Mat