Further Mathematics
AI prompts for senior secondary learners.
📅 36-Week WAEC Study Guide for Further Mathematics →716 prompts matching "Quiz: Subtracting one surd from another"
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Explain Back: The determinant of a product as the product of the determinants
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Subscribe to unlock allPractice: The sign pattern of the cofactors in a 3 by 3 determinant
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Subscribe to unlock allWorked Example: Evaluating a 3 by 3 determinant by the rule of Sarrus
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Subscribe to unlock allSpot My Mistake: Forming the determinant Dx by replacing the first column
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Subscribe to unlock allWorked Example: Forming the determinant Dy by replacing the second column
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Subscribe to unlock allLearn: Solving two simultaneous equations by Cramer's rule
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Subscribe to unlock allExplain Back: What a coefficient determinant of nought says about the system
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Subscribe to unlock allSpot My Mistake: Checking a Cramer's rule solution by substituting back
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Subscribe to unlock allPractice: Turning a minor into a cofactor with the sign rule
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Subscribe to unlock allExplain Back: Writing out the full matrix of cofactors
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Subscribe to unlock allSpot My Mistake: Checking cofactors by expanding the determinant along a second row
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Subscribe to unlock allExplain Back: Finding the adjoint of a 2 by 2 matrix quickly
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Subscribe to unlock allSpot My Mistake: Finding the adjoint of a 3 by 3 matrix
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Subscribe to unlock allWorked Example: The identity that A times its adjoint gives the determinant times the identity
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Subscribe to unlock allLearn: Swapping and negating the entries when inverting a 2 by 2 matrix
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Subscribe to unlock allPractice: Why a 2 by 2 matrix with determinant nought cannot be inverted
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Subscribe to unlock allLearn: The order of the steps in inverting a 3 by 3 matrix
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Subscribe to unlock allExplain Back: The inverse of a diagonal matrix
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Subscribe to unlock allExplain Back: Solving two simultaneous equations by multiplying by the inverse
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Subscribe to unlock allSpot My Mistake: Why the inverse must be applied on the correct side
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