1,045 prompts matching "Writing out the full matrix of cofactors"
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Learn: Solving a cubic once it has been factorised
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Worked Example: How many roots a cubic equation has
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Explain Back: A cubic with a repeated root
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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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Show All Working: Translating an English sentence into logical symbols
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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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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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WAEC Prep: A truth table with three propositions in it
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WAEC Prep: Why a conditional and its contrapositive are equivalent
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Show All Working: Why a conditional and its converse are not equivalent
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Final Revision: A conditional statement set in an everyday situation
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Explain Back: Showing two statements equivalent by truth table
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Learn: What a tautology is
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Worked Example: What a contradiction is
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Explain Back: Showing that a statement is a contradiction
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