1,324 prompts matching "Why does completing the square work"
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Learn: Converting a weight given in kilogram-force into newtons
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Spot My Mistake: Compounding three forces acting at one point
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Learn: A space diagram and a force diagram drawn side by side
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Learn: What an unclosed polygon of forces tells you
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Practice: Finding an unknown force from a closed polygon
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Practice: Resolving three forces in two perpendicular directions
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Spot My Mistake: Finding two unknown tensions from three forces in equilibrium
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Practice: Using a binomial expansion to approximate a number
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Learn: Finding lambda from a stated mean
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Spot My Mistake: Drawing a vector as a directed line segment
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Practice: A vector of stated magnitude in a given direction
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Practice: Equating real and imaginary parts to find two unknowns
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Practice: Converting a complex number from polar form back to a plus bi
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Practice: Differentiating sin x and cos x
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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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Learn: Finding displacement by integrating velocity
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Practice: A body thrown vertically upwards
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Learn: Newton's second law written as F equals ma
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Spot My Mistake: Partial fractions with an irreducible quadratic factor
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