1,312 prompts matching "Completing the square when the roots are not real"
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Common Mistakes: The angle between two lines found from their gradients
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Final Revision: The perpendicular distance from a point to a line
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Worked Example: The equation of a circle with a given centre and radius
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Practice: The equation of a circle on a given diameter
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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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Common Mistakes: The condition for a line to be a tangent to a circle
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Final Revision: The equation of the circle through three given points
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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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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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Practice: The mean deviation from the mean
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WAEC Prep: The standard deviation of grouped data using an assumed mean
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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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Final Revision: Reading the quartiles off a cumulative frequency curve
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Worked Example: The sign convention for clockwise and anticlockwise moments
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WAEC Prep: A couple, and why its moment is the same about every point
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Common Mistakes: The centre of gravity of a uniform lamina
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