1,316 prompts matching "The alternative sum formula that uses the last term"
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Quiz: The zero matrix, and how it differs from nought in arithmetic
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WAEC Prep: The order of a matrix formed from a table of data
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WAEC Prep: Stating the order of a product before working it out
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WAEC Prep: Reading the order of a matrix as rows by columns
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Practice: The condition on the orders for a product to exist
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Explain Back: The order of the answer when two matrices are multiplied
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Learn: Deciding whether a stated matrix calculation is possible at all
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WAEC Prep: What Cramer's rule gives when the system is inconsistent
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Quiz: Arranging the equations in standard form before applying Cramer's rule
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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 adjoint of the identity matrix
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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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Explain Back: Finding the adjoint of a 2 by 2 matrix quickly
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Spot My Mistake: Finding the adjoint of a 3 by 3 matrix
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WAEC Prep: The inverse of an inverse
Act as my WAEC Further Mathematics coach. I am in SS 3. Take me through the inverse of an