1,327 prompts matching "Learn: The formula for the sum of the first n terms of an arithmetic progression"
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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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Explain Back: The effect of b in y equals sin bx on the period
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Show All Working: Reading the solutions of a trigonometric equation off a graph
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Learn: The distance between two points
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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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Worked Example: The equation of a circle with a given centre and radius
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WAEC Prep: The length of the tangent from an external point
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Show All Working: The intersection of a circle and a straight line
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Learn: The parabola y squared equals 4ax, with its focus and directrix
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Explain Back: The eccentricity of an ellipse
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WAEC Prep: The hyperbola in standard form, and its asymptotes
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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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Show All Working: The effect on the standard deviation of adding a constant to every value
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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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WAEC Prep: The closest approach of two moving ships
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Common Mistakes: The relative displacement of two bodies after a given time
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