1,301 prompts matching "An arithmetic progression with a negative common difference"
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Common Mistakes: Giving the general solution of a trigonometric equation
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Worked Example: The shape, period and range of the cosine curve
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Common Mistakes: Sketching two trigonometric curves on the same axes to find where they meet
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Show All Working: The intersection of a circle and a straight line
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Practice: The ellipse in standard form, and its two axes
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Explain Back: The eccentricity of an ellipse
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Show All Working: The rectangular hyperbola xy equals c squared
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Common Mistakes: Identifying a conic from a general second-degree equation
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Worked Example: The interquartile range of a set of ordered data
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Practice: The mean deviation from the mean
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Explain Back: The variance of an ungrouped set of data
I have just studied the variance of an ungrouped set of data in my SS3 Further Mathematics
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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Worked Example: The sign convention for clockwise and anticlockwise moments
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Show All Working: Replacing two parallel forces by a single resultant
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Common Mistakes: The centre of gravity of a uniform lamina
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Practice: The triangle of velocities for a boat crossing a river
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Show All Working: The time at which two bodies are nearest one another
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Common Mistakes: The relative displacement of two bodies after a given time
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Practice: A particle on a smooth table connected to a hanging particle
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