1,048 prompts matching "IGCSE Additional Maths Y11: Telling nPr from nCr in the wording of a question —"
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Worked Example: The parametric form of a point on a parabola
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Explain Back: The eccentricity of an ellipse
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Spot My Mistake: The foci of an ellipse
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WAEC Prep: The hyperbola in standard form, and its asymptotes
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Show All Working: The rectangular hyperbola xy equals c squared
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Final Revision: The focus-directrix definition shared by all the conics
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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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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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Show All Working: The effect on the standard deviation of adding a constant to every value
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Common Mistakes: The coefficient of variation, for comparing two sets
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Final Revision: Reading the quartiles off a cumulative frequency curve
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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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Explain Back: Finding the reaction at each support of a loaded beam
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Spot My Mistake: The point at which a loaded beam will tip about its support
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WAEC Prep: A couple, and why its moment is the same about every point
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Show All Working: Replacing two parallel forces by a single resultant
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