1,125 prompts matching "Simplifying a logarithmic expression before evaluating it"
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Spot My Mistake: The point at which a loaded beam will tip about its support
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WAEC Prep: A couple, and why its moment is the same about every point
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Common Mistakes: The centre of gravity of a uniform lamina
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Worked Example: Relative velocity when two bodies move along the same line
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Practice: The triangle of velocities for a boat crossing a river
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Spot My Mistake: An aeroplane in a cross-wind, and its resultant track
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Show All Working: A lift, and the person standing in it
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WAEC Prep: Limiting equilibrium, with a body on the point of sliding
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Common Mistakes: The condition for a body to complete a vertical circle
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Worked Example: The amplitude, period and frequency of a simple harmonic motion
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Explain Back: The displacement written as x equals a sin omega t
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Spot my mistake: Treating the kilogram and the kilogram weight as the same unit
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Spot my mistake: Adding the magnitudes of concurrent forces to get the magnitude of their resultant
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Spot my mistake: Treating the variance of a binomial distribution as its standard deviation
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Spot my mistake: Assuming the normal curve meets the horizontal axis at its points of inflexion
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Spot my mistake: Assuming multiplying a vector by a negative scalar leaves its magnitude negative
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Spot my mistake: Treating any vector with small components as a unit vector
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Spot my mistake: Assuming a quadratic with a negative discriminant has no roots at all
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Spot my mistake: Differentiating a product by multiplying the derivatives of its two factors
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Spot my mistake: Leaving out the constant of integration when velocity is found from acceleration
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