1,334 prompts matching "A binary operation that is ordinary addition in disguise"
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Common Mistakes: A binary operation defined by arithmetic modulo n
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Worked Example: Testing whether a binary operation is closed on a given set
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Spot My Mistake: Finding the inverse of an element under a binary operation
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Show All Working: Solving an equation written in terms of a binary operation
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Showing that fg(x) is not the same as gf(x)
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Learn: Reading a binary operation defined by a formula such as a*b = a + b - ab
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Simplifying algebraic fractions that need factorising a quadratic first
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Show that command word: line is tangent to a circle
I am in SS 3. Set me a 'show that the line is a tangent to the circle' coordinate geometry
Show that command word: a function is its own inverse
I am in SS 3. Set me a 'show that' function question where I must show a given function is
Explain Back: Showing that a system of concurrent forces is in equilibrium
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Spot My Mistake: De Morgan's law that the complement of a union is the intersection of the complements
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Common Mistakes: Showing that intersection distributes over union
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Quiz: Testing a binary operation for commutativity
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Practice: Testing a binary operation for associativity
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Explain Back: Finding the identity element of a binary operation
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Final Revision: Proving that root 2 is irrational
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Common Mistakes: Proving that a quadratic expression is positive for every real x
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Final Revision: Solving a disguised quadratic by substitution
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Final Revision: Checking that the roots found satisfy the original equation
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Final Revision: Showing that a given motion is simple harmonic
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