1,325 prompts matching "A word problem solved with the quadratic formula"
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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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Practice: The equation of a circle on a given diameter
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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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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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Show All Working: The rectangular hyperbola xy equals c squared
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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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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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Worked Example: The sign convention for clockwise and anticlockwise moments
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Common Mistakes: The centre of gravity of a uniform lamina
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Worked Example: Relative velocity when two bodies move along the same line
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Practice: The triangle of velocities for a boat crossing a river
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Show All Working: The time at which two bodies are nearest one another
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Common Mistakes: The relative displacement of two bodies after a given time
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Worked Example: The common acceleration of two connected particles
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