755 prompts matching "The double angle formula for sine"
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Learn: Simplifying root 72 into its simplest form
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Worked Example: Adding two surds that simplify to the same root
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Quiz: Subtracting one surd from another
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Spot My Mistake: Dividing one surd by another
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Learn: Why a surd is never left in the denominator
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Practice: Rationalising a denominator with a whole number multiplying the surd
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Spot My Mistake: Rationalising and then cancelling a common factor
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Learn: The conjugate of a compound surd expression
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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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Quiz: Checking a surd equation for extraneous roots
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Final Revision: A word problem that leads to an equation in surd form
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Learn: What closure means for a binary operation
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Practice: Testing a set for closure under multiplication
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Learn: What it means for an operation to be commutative
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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
I have just studied what it means for an operation to be associative in my SS1 Further Mat
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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