1,334 prompts matching "Expressing a rationalised answer in the form a root b over c"
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Practice: Deciding whether a point lies on a given line
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Explain Back: The resultant of forces given as vectors
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Learn: The real and the imaginary parts of a complex number
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Practice: The argument of a complex number in the second or third quadrant
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Explain Back: The locus of a complex number at a fixed distance from a point
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Explain Back: Raising a complex number to a power by de Moivre's theorem
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Learn: Choosing between the product rule and the quotient rule
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Worked Example: Classifying a stationary point by the sign of the gradient either side
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Explain Back: The constant of integration, and why it appears
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Learn: An area lying below the x-axis, and its sign
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Learn: Connected rates of change through the chain rule
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Explain Back: The greatest height reached by a body thrown upwards
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Practice: The conservation of momentum in a collision
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Worked Example: Power as the rate of doing work
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Learn: The kinetic energy of a moving body
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Worked Example: Finding the first term and the common difference from two given terms
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Explain Back: The sum of the first n terms of a geometric progression
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Practice: The sum to infinity of a convergent geometric series
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Practice: Finding a remainder without carrying out the division
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Explain Back: The line of best fit, and the regression line
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