1,207 prompts matching "Practice: Arrangements of a word with repeated letters"
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Learn: Deciding whether a stated matrix calculation is possible at all
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WAEC Prep: Evaluating A squared minus 2A
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WAEC Prep: Evaluating 2A plus 3B for two given matrices
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Explain Back: Solving a matrix equation containing both a sum and a product
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Quiz: Finding an unknown entry from a stated matrix equation
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WAEC Prep: Expanding a 3 by 3 determinant down a column
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WAEC Prep: Expanding a 3 by 3 determinant along the first row
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Quiz: Expanding a 3 by 3 determinant along a row or column containing noughts
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WAEC Prep: When Cramer's rule is quicker than elimination
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WAEC Prep: Setting out the coefficient determinant for two simultaneous equations
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Spot My Mistake: Forming the determinant Dx by replacing the first column
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Learn: Solving two simultaneous equations by Cramer's rule
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WAEC Prep: What Cramer's rule gives when the system is inconsistent
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WAEC Prep: Setting out Cramer's rule for three simultaneous equations
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Spot My Mistake: Checking a Cramer's rule solution by substituting back
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Quiz: Arranging the equations in standard form before applying Cramer's rule
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Learn: Swapping and negating the entries when inverting a 2 by 2 matrix
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Quiz: Checking an inverse by multiplying to get the identity
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WAEC Prep: Checking the determinant before attempting a 3 by 3 inverse
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Quiz: Checking a 3 by 3 inverse by multiplication
Act as my SS3 Further Mathematics tutor and quiz me on checking a 3 by 3 inverse by multip