1,120 prompts matching "Writing a root as a fractional index before simplifying"
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Spot My Mistake: Using concurrence to find the direction of an unknown third force
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WAEC Prep: A particle in equilibrium on a smooth inclined plane
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WAEC Prep: A knot held in equilibrium by three strings
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WAEC Prep: The conditions for a particle under three forces to be in equilibrium
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Practice: Resolving three forces in two perpendicular directions
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Explain Back: A particle hanging from two strings set at different angles
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Spot My Mistake: Finding two unknown tensions from three forces in equilibrium
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WAEC Prep: Lami's theorem derived from the triangle of forces
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WAEC Prep: A lamp hanging from two wires, solved by Lami's theorem
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WAEC Prep: The statement of Lami's theorem
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Worked Example: Matching each force to the sine of the angle opposite it
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Spot My Mistake: When Lami's theorem may be used, and when it may not
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WAEC Prep: The variance of a discrete random variable
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WAEC Prep: A random variable, and the values it may take
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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 probabilities of nought, one and two successes read off an expansion
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WAEC Prep: The binomial expansion of a plus b all to the power n
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Worked Example: Finding a particular term of a binomial expansion
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Practice: Using a binomial expansion to approximate a number
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