755 prompts matching "Showing that fg(x) is not the same as gf(x)"
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Show All Working: Deciding whether two given surds are equal without a calculator
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Show All Working: Simplifying a surd expression that contains brackets
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Show All Working: Checking a rationalised answer by decimal approximation
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Learn: The conjugate of a compound surd expression
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Show All Working: A conjugate where the surd term comes first
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Learn: What a binary operation actually is
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Show All Working: Evaluating a repeated operation such as a*(b*c)
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Common Mistakes: Closure on a set of three elements under a stated rule
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Show All Working: Using distributivity to simplify an expression
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Common Mistakes: Distributivity on a set of three elements
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Learn: What an identity element is
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Show All Working: A word problem that leads to an indicial equation
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Common Mistakes: An indicial equation solved by substitution
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Common Mistakes: Reading a logarithm from a table
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Learn: The law for the logarithm of a product
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Show All Working: Comparing logarithms given in different bases
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Learn: What a sequence is, and what a term means
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Show All Working: Deciding whether a number belongs to a given arithmetic progression
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Common Mistakes: An arithmetic progression with a negative common difference
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Learn: The formula for the sum of the first n terms of an arithmetic progression
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