1,331 prompts matching "Which form of the sum formula to use when r is less than one"
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WAEC Prep: Evaluating A squared minus 2A
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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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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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Spot My Mistake: Checking a Cramer's rule solution by substituting back
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Practice: Why a 2 by 2 matrix with determinant nought cannot be inverted
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Quiz: Checking a 3 by 3 inverse by multiplication
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WAEC Prep: Simultaneous equations with fractional coefficients solved by matrix
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WAEC Prep: A three-unknown system arising from a word problem
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WAEC Prep: Resolving before compounding several forces
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Spot My Mistake: Compounding three forces acting at one point
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WAEC Prep: Two forces acting in opposite directions
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WAEC Prep: A rigid body held in equilibrium by four forces
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Practice: Finding an unknown force from a closed polygon
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WAEC Prep: Why friction is called a self-adjusting force
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WAEC Prep: A particle in equilibrium on a smooth inclined plane
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WAEC Prep: A knot held in equilibrium by three strings
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Practice: Resolving three forces in two perpendicular directions
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