1,324 prompts matching "Why does completing the square work"
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Worked Example: Drawing the polygon of forces to scale
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Worked Example: The moment of a force about a point on its own line of action
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Explain Back: The units of a moment, and why they are newton metres
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Worked Example: The total moment of three parallel forces about one end
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Worked Example: Matching each force to the sine of the angle opposite it
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Worked Example: The probability of no events at all in a Poisson distribution
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WAEC Prep: Why the mean and the variance of a Poisson distribution are equal
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WAEC Prep: Why the total area under the normal curve is one
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Worked Example: The continuity correction when approximating a discrete distribution
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Worked Example: The distance between two points in three dimensions
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Worked Example: Finding the unit vector in the direction of a given vector
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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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WAEC Prep: The dot product used to find the work done by a force
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WAEC Prep: The dot product worked out from components
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WAEC Prep: Writing the square root of minus nine in terms of i
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Worked Example: The powers of i, and the cycle they follow
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WAEC Prep: The square roots of a complex number
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WAEC Prep: Why the limit is taken as h tends to nought
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Worked Example: The quotient rule for differentiation
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