1,319 prompts matching "The inverse of the identity element itself"
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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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Worked Example: The identity that A times its adjoint gives the determinant times the identity
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WAEC Prep: Checking the determinant before attempting a 3 by 3 inverse
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Learn: The order of the steps in inverting a 3 by 3 matrix
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Explain Back: Solving two simultaneous equations by multiplying by the inverse
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Spot My Mistake: Why the inverse must be applied on the correct side
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Quiz: Solving three simultaneous equations with the inverse matrix
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Practice: Comparing the inverse method with elimination for three equations
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Worked Example: Checking the solution of three equations by substitution
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Worked Example: The units of mass, and the SI unit
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WAEC Prep: The weight of a body on the moon compared with on earth
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Worked Example: The weight of a body as mass times g
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Practice: The value of g used in Nigerian examination papers
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WAEC Prep: The resultant of two equal forces at sixty degrees
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WAEC Prep: The resultant of two forces acting at the same point
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Practice: The parallelogram law of forces
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Explain Back: The resultant of two forces acting in the same straight line
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WAEC Prep: The angle the resultant makes with the larger of two forces
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