1,322 prompts matching "Simplifying the answer once the denominator is rational"
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Spot My Mistake: Reading a probability from the standard normal table
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Practice: Using the normal tables when the z-score is negative
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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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Spot My Mistake: The vector from A to B as the difference of two position vectors
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Spot My Mistake: The equilibrium condition written in vector form
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Spot My Mistake: Dividing one complex number by another using the conjugate
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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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Spot My Mistake: Deriving a multiple angle formula from de Moivre's theorem
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Spot My Mistake: Classifying a stationary point by the second derivative
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Spot My Mistake: Finding the constant of integration from a given point
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Worked Example: The area between a curve and the x-axis
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Learn: An area lying below the x-axis, and its sign
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Practice: The sign convention for displacement, velocity and acceleration
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Practice: The conservation of momentum in a collision
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Spot My Mistake: The sum of the first n terms of an arithmetic progression
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Spot My Mistake: Finding the common ratio from two given terms
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Practice: The middle term when the power is odd
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Practice: Finding a remainder without carrying out the division
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