1,045 prompts matching "How long the inverse of a 3 by 3 matrix takes, and how to shorten it"
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WAEC Prep: Forming an equation whose roots are alpha plus one and beta plus one
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Final Revision: Using a symmetric function to find an unknown coefficient
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WAEC Prep: A pair that gives no real solution at all
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Final Revision: Checking both solutions in both equations
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Final Revision: A word problem about a line and a parabola
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Learn: What makes an expression a polynomial
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WAEC Prep: Expressions that are not polynomials, and why not
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Practice: A division that leaves no remainder
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Learn: Factorising a cubic into three linear factors
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Worked Example: Factorising a cubic into a linear and a quadratic factor
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Learn: Solving a cubic once it has been factorised
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Practice: A cubic with one real root and two complex ones
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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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Worked Example: Conjunction in a three-variable truth table
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Practice: Negation combined with a compound statement
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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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Final Revision: A conditional statement set in an everyday situation
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