1,067 prompts matching "Approximating a surd to three decimal places"
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Worked Example: The shape, period and range of the cosine curve
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Practice: The effect of a in y equals a sin x
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Explain Back: The effect of b in y equals sin bx on the period
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Spot My Mistake: The effect of c in y equals sin x plus c
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Learn: The distance between two points
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Quiz: The gradient of the line through two points
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Practice: The equation of a line through a point with a given gradient
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Explain Back: The equation of the line through two given points
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Spot My Mistake: The general form ax plus by plus c equals nought
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Learn: The equation of a circle with its centre at the origin
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Worked Example: The equation of a circle with a given centre and radius
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Quiz: Finding the centre and the radius from the general equation
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Practice: The equation of a circle on a given diameter
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Explain Back: Deciding whether a point lies inside, on or outside a circle
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Learn: The parabola y squared equals 4ax, with its focus and directrix
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Worked Example: The parametric form of a point on a parabola
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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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Spot My Mistake: The foci of an ellipse
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Learn: The range, and why it is a weak measure of spread
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