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Further Mathematics

AI prompts for senior secondary learners.

📅 36-Week WAEC Study Guide for Further Mathematics →
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1,334 prompts matching "Adding or subtracting the same number on both sides"

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Worked Example: Evaluating a 3 by 3 determinant by the rule of Sarrus

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Spot My Mistake: Forming the determinant Dx by replacing the first column

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WAEC Prep: Setting out Cramer's rule for three simultaneous equations

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WAEC Prep: The cofactor of a corner entry

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WAEC Prep: Why the cofactor signs alternate

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WAEC Prep: The minor of an entry of a 3 by 3 matrix

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Practice: Turning a minor into a cofactor with the sign rule

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Explain Back: Writing out the full matrix of cofactors

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WAEC Prep: The order in which the cofactors are transposed

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WAEC Prep: The adjoint as the transpose of the matrix of cofactors

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Worked Example: The identity that A times its adjoint gives the determinant times the identity

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WAEC Prep: Checking the determinant before attempting a 3 by 3 inverse

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Learn: The order of the steps in inverting a 3 by 3 matrix

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Explain Back: The inverse of a diagonal matrix

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Explain Back: Solving two simultaneous equations by multiplying by the inverse

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Practice: What a singular coefficient matrix says about the equations

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WAEC Prep: When the matrix method is worth the work for three unknowns

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Quiz: Solving three simultaneous equations with the inverse matrix

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WAEC Prep: A particle, and what the word assumes

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WAEC Prep: A rigid body, and what the word assumes

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