1,283 prompts matching "Union and intersection of two number sets"
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Practice: The sign pattern of the cofactors in a 3 by 3 determinant
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WAEC Prep: Setting out the coefficient determinant for two simultaneous equations
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Learn: Solving two simultaneous equations by Cramer's rule
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WAEC Prep: The determinant Dz in a system of three unknowns
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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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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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Spot My Mistake: Finding the adjoint of a 3 by 3 matrix
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WAEC Prep: The inverse of a 2 by 2 matrix with a fractional determinant
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WAEC Prep: The inverse of an inverse
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WAEC Prep: The inverse of a 2 by 2 matrix as one over the determinant times the adjoint
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Learn: The order of the steps in inverting a 3 by 3 matrix
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WAEC Prep: Writing two simultaneous equations as a single matrix equation
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WAEC Prep: The weight of a body on the moon compared with on earth
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Practice: The value of g used in Nigerian examination papers
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Practice: The parallelogram law of forces
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