1,334 prompts matching "A sign error in the formula, and how to catch it"
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Quiz: Checking a 3 by 3 inverse by multiplication
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WAEC Prep: Writing two simultaneous equations as a single matrix equation
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WAEC Prep: Writing three simultaneous equations as a single matrix equation
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Quiz: Why mass stays the same wherever the body is taken
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Learn: The resultant of two perpendicular forces
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Learn: The component of a force along a stated direction
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Quiz: The magnitude of the resultant of several coplanar 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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Quiz: The coefficient of friction between two surfaces
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WAEC Prep: Calculating a moment as force times perpendicular distance
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Learn: The algebraic sum of moments when the senses differ
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WAEC Prep: Why three non-parallel forces in equilibrium must be concurrent
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WAEC Prep: The statement of Lami's theorem
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Quiz: The situations a Poisson distribution models
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Learn: Finding lambda from a stated mean
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WAEC Prep: The probability that a normal variable lies below a given value
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Learn: The probability that a normal variable lies between two values
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WAEC Prep: The dot product worked out from components
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WAEC Prep: Adding two complex numbers
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