1,334 prompts matching "Sum and product of roots of a cubic exam question"
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Learn: Inertia, and what mass actually measures
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Explain Back: The resultant of two forces acting in the same straight line
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Explain Back: Showing that a system of concurrent forces is in equilibrium
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Learn: A space diagram and a force diagram drawn side by side
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Practice: Limiting friction, and the greatest value it can reach
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Explain Back: Locating the point of concurrence on a diagram
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Spot My Mistake: When Lami's theorem may be used, and when it may not
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Explain Back: A probability distribution table for a discrete random variable
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Explain Back: Finding n and p from a given mean and variance
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Explain Back: Testing whether data are Poisson by comparing mean and variance
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Quiz: The area under the normal curve, and what it represents
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Spot My Mistake: Reading a probability from the standard normal table
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Worked Example: Finding a value from a given probability by working backwards
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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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Learn: The unit vectors i, j and k
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Worked Example: Testing two vectors for perpendicularity
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Explain Back: The resultant of forces given as vectors
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Practice: Equating real and imaginary parts to find two unknowns
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Worked Example: Squaring a complex number
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