1,306 prompts matching "Deriving the geometric series sum formula"
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Quiz: Multiplying a matrix by minus one
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WAEC Prep: Pre-multiplying a column vector by a matrix
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WAEC Prep: Post-multiplying a row vector by a matrix
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Quiz: Solving AX equals B and XA equals B by different routes
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Spot My Mistake: A symmetric matrix, equal to its own transpose
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WAEC Prep: A skew-symmetric matrix
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Practice: A diagonal matrix
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Worked Example: A singular matrix, and why it has no inverse
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WAEC Prep: Evaluating A squared minus 2A
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WAEC Prep: A matrix expression with brackets to expand
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WAEC Prep: Evaluating 2A plus 3B for two given matrices
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Practice: Evaluating AB minus BA
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Quiz: Finding an unknown entry from a stated matrix equation
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Worked Example: What a determinant of nought means for a 2 by 2 matrix
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WAEC Prep: Expanding a 3 by 3 determinant down a column
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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: Cramer's rule applied to a pair with fractional coefficients
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Learn: Solving two simultaneous equations by Cramer's rule
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WAEC Prep: Setting out Cramer's rule for three simultaneous equations
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