755 prompts matching "The three forms of the double angle formula for cosine"
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Worked Example: Why multiplying by the conjugate clears the surd
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Spot My Mistake: Simplifying the denominator once the conjugate has been used
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Show All Working: A conjugate where the surd term comes first
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Quiz: Checking a surd equation for extraneous roots
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Practice: Testing a set for closure under multiplication
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Worked Example: Testing a*b against b*a for a given rule
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Explain Back: What it means for an operation to be associative
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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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Common Mistakes: Checking an inverse by working the operation both ways
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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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Practice: Solving 2 to the power x equals 32
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Show All Working: The common logarithm, to base ten
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WAEC Prep: Simplifying a logarithmic expression before evaluating it
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Spot My Mistake: A logarithm to base e, the natural logarithm
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WAEC Prep: Solving an exponential equation by taking logarithms of both sides
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Common Mistakes: The Fibonacci sequence and the rule behind it
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Spot My Mistake: Finding the common difference from two given terms
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