1,331 prompts matching "Which form of the sum formula to use when r is less than one"
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Spot My Mistake: The identity that n choose r equals n choose n minus r
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Worked Example: The identities for one plus tan squared and one plus cot squared
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WAEC Prep: A phase shift in y equals sin of x minus d
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Common Mistakes: The angle between two lines found from their gradients
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Quiz: Finding the centre and the radius from the general equation
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Explain Back: Deciding whether a point lies inside, on or outside a circle
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Quiz: The semi-interquartile range
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Practice: The mean deviation from the mean
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Worked Example: The sign convention for clockwise and anticlockwise moments
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Worked Example: Relative velocity when two bodies move along the same line
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Quiz: Relative velocity when the two motions are at right angles
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Quiz: The tension in the string joining two connected particles
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Practice: A particle on a smooth table connected to a hanging particle
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Explain Back: A particle on a rough table connected to a hanging particle
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Worked Example: The normal reaction on a body resting on a smooth incline
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Practice: The frictional force on a body on a rough incline
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Common Mistakes: The work done against friction on an incline
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Quiz: The centripetal force, and what supplies it in a given situation
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Practice: The maximum speed and the maximum acceleration in simple harmonic motion
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Explain Back: The displacement written as x equals a sin omega t
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