1,281 prompts matching "Index law shortcuts for mental exam questions"
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Worked Example: Evaluating a 3 by 3 determinant by the rule of Sarrus
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Spot My Mistake: Forming the determinant Dx by replacing the first column
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Quiz: Arranging the equations in standard form before applying Cramer's rule
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Worked Example: The identity that A times its adjoint gives the determinant times the identity
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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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Worked Example: The weight of a body as mass times g
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Learn: Converting a weight given in kilogram-force into newtons
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Explain Back: The resultant of two forces acting in the same straight line
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Spot My Mistake: Compounding three forces acting at one point
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Learn: The resultant of two perpendicular forces
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Spot My Mistake: The greatest and the least resultant of two given forces
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Learn: The component of a force along a stated direction
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Quiz: Recovering the original force from its two components
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Quiz: The magnitude of the resultant of several coplanar forces
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Practice: The direction of the resultant of several coplanar forces
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Explain Back: Showing that a system of concurrent forces is in equilibrium
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Worked Example: Marking the weight, the normal reaction and the friction on a diagram
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Learn: A space diagram and a force diagram drawn side by side
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