1,332 prompts matching "Finding the first term from the sum and the common difference"
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Explain Back: Rationalising a denominator of the form a plus root b using the conjugate
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Explain Back: The range of values of k for which the roots are real
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Worked Example: Solving a quadratic inequality by sketching the parabola
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Worked Example: The number of arrangements of n different objects in a row
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Explain Back: Arrangements in which two particular objects must stay together
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Explain Back: The compound angle formula for tan of A plus B
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Explain Back: The effect of b in y equals sin bx on the period
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Worked Example: The midpoint formula applied to a given segment
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Explain Back: The equation of the line through two given points
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Explain Back: Deciding whether a point lies inside, on or outside a circle
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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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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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Worked Example: Relative velocity when two bodies move along the same line
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Explain Back: The course to steer so that a boat crosses straight over
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Worked Example: The normal reaction on a body resting on a smooth incline
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Worked Example: The acceleration of a body moving round a circle at constant speed
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Explain Back: The displacement written as x equals a sin omega t
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Worked Example: The tension in a stretched elastic string
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