1,305 prompts matching "Solving a surd equation that gives an extraneous root"
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Learn: The range, and why it is a weak measure of spread
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Worked Example: The interquartile range of a set of ordered data
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Quiz: The semi-interquartile range
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Explain Back: The variance of an ungrouped set of data
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Spot My Mistake: The standard deviation of an ungrouped set of data
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WAEC Prep: The standard deviation of grouped data using an assumed mean
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Learn: The moment of a force about a point, and its units
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Worked Example: The sign convention for clockwise and anticlockwise moments
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WAEC Prep: A couple, and why its moment is the same about every point
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Learn: The velocity of one body relative to another
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Quiz: Relative velocity when the two motions are at right angles
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Explain Back: The course to steer so that a boat crosses straight over
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Spot My Mistake: An aeroplane in a cross-wind, and its resultant track
Act as my SS3 Further Mathematics tutor. Work a question on an aeroplane in a cross-wind,
Explain Back: A particle on a rough table connected to a hanging particle
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Spot My Mistake: Two particles on a pulley at the top of an inclined plane
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WAEC Prep: A car towing a trailer, and the force in the tow bar
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Explain Back: The angle of friction, and the coefficient of friction
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Learn: Angular velocity, and how it relates to linear speed
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Worked Example: The acceleration of a body moving round a circle at constant speed
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Explain Back: A car on a banked track
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