1,334 prompts matching "Expressing a rationalised answer in the form a root b over c"
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Practice: The components of a vector given its magnitude and direction
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Learn: The magnitude of a three-dimensional vector
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Practice: The magnitude of the sum of two vectors
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Learn: The unit vectors i, j and k
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Practice: A vector of stated magnitude in a given direction
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Worked Example: The triangle law of vector addition
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Worked Example: Testing two vectors for perpendicularity
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Learn: The angle between a vector and one of the axes
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Worked Example: The powers of i, and the cycle they follow
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Practice: Equating real and imaginary parts to find two unknowns
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Worked Example: Squaring a complex number
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Practice: The sum of a complex number and its conjugate
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Practice: The addition of complex numbers shown on an Argand diagram
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Practice: Differentiating x squared from first principles
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Practice: Differentiating sin x and cos x
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Explain Back: Differentiating tan x
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Worked Example: The quotient rule for differentiation
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Worked Example: Differentiating a bracket raised to a power
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Learn: Differentiating sin of a multiple of x
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Learn: Integrating a polynomial term by term
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