1,331 prompts matching "Converting an answer back out of index form"
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Spot My Mistake: Reading a probability from the standard normal table
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Worked Example: Finding a value from a given probability by working backwards
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Learn: The coordinates of a point in three dimensions
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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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Worked Example: Finding the unit vector in the direction of a given vector
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Practice: A vector of stated magnitude in a given direction
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Worked Example: The position vector of the midpoint of AB
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Quiz: Subtracting one complex number from another
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Spot My Mistake: Dividing one complex number by another using the conjugate
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Explain Back: Raising a complex number to a power by de Moivre's theorem
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Learn: The cube roots of unity
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Practice: Why complex roots of a real quadratic come in conjugate pairs
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Explain Back: Differentiating one over x from first principles
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Learn: Differentiating sin of a multiple of x
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Worked Example: Classifying a stationary point by the sign of the gradient either side
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Quiz: Using the initial conditions to fix the constants in a kinematics problem
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Explain Back: The greatest height reached by a body thrown upwards
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Quiz: Impulse as the change in momentum
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Practice: The conservation of momentum in a collision
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