1,334 prompts matching "Quiz: A negative value of b in the quadratic formula"
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Explain Back: Solving a quadratic in sin x
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WAEC Prep: Solving an equation by first applying a double angle formula
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Show All Working: Solving a cos x plus b sin x equals c by the R method
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Quiz: The tangent curve and its asymptotes
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WAEC Prep: A phase shift in y equals sin of x minus d
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Common Mistakes: Sketching two trigonometric curves on the same axes to find where they meet
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Show All Working: Proving two given lines perpendicular from their gradients
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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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Common Mistakes: The condition for a line to be a tangent to a circle
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Spot My Mistake: The foci of an ellipse
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Show All Working: The rectangular hyperbola xy equals c squared
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Final Revision: The focus-directrix definition shared by all the conics
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Learn: The range, and why it is a weak measure of spread
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Spot My Mistake: The standard deviation of an ungrouped set of data
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Final Revision: A ladder leaning against a wall, and the moments acting on it
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Learn: The velocity of one body relative to another
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Quiz: Relative velocity when the two motions are at right angles
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