971 prompts matching "Raising a complex number to a power by de Moivre's theorem"
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Worked Example: How many roots a cubic equation has
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Show All Working: Solving a cubic that must first be rearranged
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Common Mistakes: A cubic equation arising from a volume problem
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Learn: What makes a sentence a proposition
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Worked Example: Sentences that are not propositions
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Final Revision: A compound proposition built from three simple ones
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Learn: How many rows a truth table needs
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Worked Example: Conjunction in a three-variable truth table
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Show All Working: Reading the final column of a truth table
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Final Revision: The exclusive sense of or, and its truth table
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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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Show All Working: Why a conditional and its converse are not equivalent
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Common Mistakes: Writing the converse, inverse and contrapositive of one statement
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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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Show All Working: The distributive laws in logic
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Common Mistakes: Simplifying a compound statement using the laws
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Worked Example: What a contradiction is
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