1,045 prompts matching "Expressing a rationalised answer in the form a root b over c"
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Common Mistakes: A cubic equation arising from a volume problem
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Practice: The conjunction of two propositions
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Common Mistakes: Translating a symbolic statement back into English
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Final Revision: A compound proposition built from three simple ones
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Worked Example: Conjunction in a three-variable truth table
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Practice: Negation combined with a compound statement
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Learn: The conditional statement, if p then q
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Worked Example: The truth table for the conditional
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Practice: The converse of a conditional
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Final Revision: A conditional statement set in an everyday situation
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Learn: The biconditional, p if and only if q
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Worked Example: The truth table for the biconditional
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Explain Back: Showing two statements equivalent by truth table
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Practice: Showing that a statement is a tautology
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Explain Back: Showing that a statement is a contradiction
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Common Mistakes: Deciding between tautology, contradiction and contingency
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Final Revision: A longer statement tested for tautology
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Final Revision: An argument written in words and tested for validity
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Learn: Arranging five different books on a shelf
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Worked Example: Arranging r of n objects in a line
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