1,334 prompts matching "Give me practice on measures of dispersion"
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WAEC Prep: The identity matrix, and what it does in a product
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Worked Example: A singular matrix, and why it has no inverse
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WAEC Prep: Evaluating A squared minus 2A
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WAEC Prep: Expanding a 3 by 3 determinant down a column
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Spot My Mistake: Forming the determinant Dx by replacing the first column
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Learn: Swapping and negating the entries when inverting a 2 by 2 matrix
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Quiz: Checking an inverse by multiplying to get the identity
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WAEC Prep: Checking the determinant before attempting a 3 by 3 inverse
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WAEC Prep: A three-unknown system arising from a word problem
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WAEC Prep: Mass, and how it differs from weight
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WAEC Prep: The difference between a kilogram and a kilogram weight
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WAEC Prep: Resolving before compounding several forces
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WAEC Prep: Drawing a clear force diagram for a body at rest
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Learn: A space diagram and a force diagram drawn side by side
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Explain Back: The order in which the forces are drawn round the triangle
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WAEC Prep: A rigid body held in equilibrium by four forces
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WAEC Prep: The three unknowns a rigid body problem usually carries
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WAEC Prep: A knot held in equilibrium by three strings
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Explain Back: A particle hanging from two strings set at different angles
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WAEC Prep: A lamp hanging from two wires, solved by Lami's theorem
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