1,153 prompts matching "IGCSE Additional Maths Y10: Finding k so that a quadratic has equal roots — Expl"
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Worked Example: Marking the weight, the normal reaction and the friction on a diagram
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Learn: A space diagram and a force diagram drawn side by side
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Worked Example: Using the sine rule on the triangle of forces
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Learn: Choosing the point about which to take moments
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Worked Example: Drawing the polygon of forces to scale
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Learn: What an unclosed polygon of forces tells you
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Worked Example: The moment of a force about a point on its own line of action
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Worked Example: The total moment of three parallel forces about one end
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Learn: The algebraic sum of moments when the senses differ
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Worked Example: Matching each force to the sine of the angle opposite it
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Learn: The expectation of a discrete random variable
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Learn: The standard deviation of a binomial distribution
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Learn: The mean, median and mode of a normal distribution
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Worked Example: The continuity correction when approximating a discrete distribution
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Learn: The coordinates of a point in three dimensions
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Worked Example: The distance between two points in three dimensions
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Learn: The magnitude of a three-dimensional vector
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Learn: The unit vectors i, j and k
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Worked Example: The position vector of the midpoint of AB
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Worked Example: The triangle law of vector addition
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