792 prompts matching "Learn: What closure means for a binary operation"
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Spot My Mistake: Dividing one complex number by another using the conjugate
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Quiz: The product of a complex number and its conjugate
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Practice: The sum of a complex number and its conjugate
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Quiz: The argument 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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Practice: The addition of complex numbers shown on an Argand diagram
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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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Quiz: The roots of a complex number shown on an Argand diagram
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Practice: Why complex roots of a real quadratic come in conjugate pairs
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Practice: Differentiating x squared from first principles
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Explain Back: Differentiating one over x 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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Spot My Mistake: Classifying a stationary point by the second derivative
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Explain Back: The constant of integration, and why it appears
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Spot My Mistake: Finding the constant of integration from a given point
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Quiz: Using the initial conditions to fix the constants in a kinematics problem
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Quiz: A rate of change problem about a vessel filling with water
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Quiz: Choosing which equation of motion to use
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