755 prompts matching "Teach me dividing complex numbers by rationalising with the conjugate"
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Common Mistakes: Rationalising a denominator of the form root a over root b
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Worked Example: Why multiplying by the conjugate clears the surd
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Practice: Rationalising a denominator of the form a plus root b over c minus root d
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Show All Working: A conjugate where the surd term comes first
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Common Mistakes: Rationalising when both terms of the denominator are surds
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Practice: Solving an equation with a surd on each side
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Spot My Mistake: A binary operation defined on a set of three elements
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Worked Example: Testing the even numbers for closure under addition
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Show All Working: Showing a set is not closed by a single counter-example
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Quiz: Reading commutativity off a symmetrical operation table
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Practice: An operation that is not commutative, with a counter-example
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Explain Back: Showing distributivity fails by a counter-example
I have just studied showing distributivity fails by a counter-example in my SS1 Further Ma
Quiz: Finding the identity element from an operation table
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Spot My Mistake: Finding the inverse of a given element
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Common Mistakes: Checking an inverse by working the operation both ways
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Final Revision: Evaluating a numerical expression using the index laws
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Quiz: An indicial equation that becomes a quadratic in a power
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Explain Back: An indicial equation with the unknown in the exponent on both sides
I have just studied an indicial equation with the unknown in the exponent on both sides in
Common Mistakes: An indicial equation solved by substitution
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Quiz: Writing a logarithm as an index statement
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