1,314 prompts matching "Practice: Reversing the sign when multiplying by a negative number"
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Spot My Mistake: The moment of a force whose line of action is not perpendicular
Act as my SS3 Further Mathematics tutor. Work a question on the moment of a force whose li
Quiz: The point about which the total moment of a set of forces vanishes
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Spot My Mistake: Using concurrence to find the direction of an unknown third force
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Quiz: A rod resting against a wall, and the concurrence of its three forces
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WAEC Prep: A knot held in equilibrium by three strings
Act as my WAEC Further Mathematics coach. I am in SS 3. Take me through a knot held in equ
Practice: Resolving three forces in two perpendicular directions
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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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Spot My Mistake: The probability of exactly r successes in n trials
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Quiz: The situations a Poisson distribution models
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Quiz: The standard deviation of a Poisson distribution
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Quiz: The area under the normal curve, and what it represents
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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: Comparing two values from different normal distributions by z-score
Act as my WAEC Further Mathematics coach. I am in SS 3. Take me through comparing two valu
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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Quiz: The probability in the upper tail of a normal distribution
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WAEC Prep: When a Poisson distribution approximates a binomial one
Act as my WAEC Further Mathematics coach. I am in SS 3. Take me through when a Poisson dis
Quiz: Reading the wording of a question to decide which distribution applies
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Quiz: The direction cosines of a vector in three dimensions
Act as my SS3 Further Mathematics tutor and quiz me on the direction cosines of a vector i