1,045 prompts matching "the determinant of a three by three matrix"
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Common Mistakes: A symmetric function needing the sum and product twice over
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Learn: Forming the quadratic that decides where a line meets a curve
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Common Mistakes: A line and a curve meeting once without the line being a tangent
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Practice: Polynomial notation such as P of x
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Explain Back: Evaluating P of 2 for a given polynomial
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Quiz: Dividing a quartic by a quadratic
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Common Mistakes: The remainder theorem applied to a quartic
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Worked Example: Testing a list of candidates to find a factor
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Practice: Showing that x plus 3 is a factor of a given polynomial
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Common Mistakes: Using the factor theorem before dividing
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Quiz: Factorising a polynomial by grouping terms
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Quiz: A cubic with three distinct real roots
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Worked Example: Conjunction in a three-variable truth table
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Spot My Mistake: Building a truth table column by column
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WAEC Prep: A truth table with three propositions in it
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Learn: The conditional statement, if p then q
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Learn: The biconditional, p if and only if q
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Explain Back: Showing two statements equivalent by truth table
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Common Mistakes: Simplifying a compound statement using the laws
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WAEC Prep: A tautology used to justify a rule of algebra
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