674 prompts matching "Expanding cos of 3 theta using de Moivre's theorem"
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Final Revision: Simplifying a fraction whose numerator and denominator are both surds
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Learn: Why a surd is never left in the denominator
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Show All Working: Checking a rationalised answer by decimal approximation
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Explain Back: The difference of two squares applied to surd conjugates
I have just studied the difference of two squares applied to surd conjugates in my SS1 Fur
Final Revision: Deciding whether a given rule really is a binary operation
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Spot My Mistake: Reading closure off an operation table
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Quiz: Reading commutativity off a symmetrical operation table
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Show All Working: Using distributivity to simplify an expression
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Learn: What an identity element is
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Spot My Mistake: Finding the inverse of a given element
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Show All Working: An element with no inverse under a given operation
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Final Revision: Identity and inverse together, and what they give the set
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Learn: Reading index notation, the base and the exponent
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Quiz: The law for dividing powers of the same base
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Common Mistakes: Why the index laws need the bases to match
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Show All Working: Simplifying an expression that mixes the index types
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Common Mistakes: Writing a root as a fractional index before simplifying
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Learn: Solving an equation by writing both sides to the same base
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Practice: Evaluating log to base 2 of 8
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Explain Back: The logarithm of one, in any base
I have just studied the logarithm of one, in any base in my SS1 Further Mathematics class.