1,153 prompts matching "IGCSE Additional Maths Y10: Finding k so that a quadratic has equal roots — Expl"
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Worked Example: The associative law for the product of three matrices
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Spot My Mistake: Orders that make a product possible one way round but not the other
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Quiz: Solving AX equals B and XA equals B by different routes
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Explain Back: The rule that the transpose of a product reverses the order
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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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Learn: Solving two simultaneous equations by Cramer's rule
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Spot My Mistake: Checking a Cramer's rule solution by substituting back
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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: Simultaneous equations with fractional coefficients solved by matrix
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WAEC Prep: Reading the solution off the product of the inverse and the constants
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Explain Back: Solving two simultaneous equations by multiplying by the inverse
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Quiz: Solving three simultaneous equations with the inverse matrix
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Worked Example: Checking the solution of three equations by substitution
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WAEC Prep: Resolving before compounding several forces
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WAEC Prep: Resolving a force into horizontal and vertical components
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Practice: Choosing the most convenient pair of directions to resolve along
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Explain Back: Showing that a system of concurrent forces is in equilibrium
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Practice: Finding an unknown force from a closed polygon
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