755 prompts matching "The condition for a line to be a tangent to a circle"
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Worked Example: Why multiplying by the conjugate clears the surd
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Quiz: Checking a surd equation for extraneous roots
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Spot My Mistake: Solving a surd equation that leads to a quadratic
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Learn: What closure means for a binary operation
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Worked Example: Testing a*b against b*a for a given rule
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Worked Example: Testing whether star distributes over plus
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Worked Example: Finding the identity element from a rule such as a*b = a + b - 3
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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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Learn: Reading index notation, the base and the exponent
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Quiz: An indicial equation that becomes a quadratic in a power
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Learn: The definition of a logarithm as the index
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Spot My Mistake: The logarithm of the base itself
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Spot My Mistake: Evaluating an expression using the laws of logarithms
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Quiz: Evaluating log to base 3 of 7 by change of base
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Worked Example: Writing out the terms of a sequence from its nth term
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Worked Example: Finding the common difference of an arithmetic progression
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Spot My Mistake: Finding the common difference from two given terms
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Spot My Mistake: The sum of an arithmetic progression with a negative common difference
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Worked Example: Finding the common ratio of a geometric progression
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