1,334 prompts matching "Finding the number of terms in an arithmetic series"
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Explain Back: Finding the adjoint of a 2 by 2 matrix quickly
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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: The inverse of an inverse
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WAEC Prep: How long the inverse of a 3 by 3 matrix takes, and how to shorten it
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WAEC Prep: Checking the determinant before attempting a 3 by 3 inverse
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WAEC Prep: Reading the solution off the product of the inverse and the constants
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Practice: The value of g used in Nigerian examination papers
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WAEC Prep: The resultant of two forces acting at the same point
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Explain Back: The resultant of two forces acting in the same straight line
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WAEC Prep: The magnitude of the resultant of two forces inclined at an angle
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WAEC Prep: The triangle of forces used together with the cosine rule
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WAEC Prep: Labelling the triangle of forces from the space diagram
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WAEC Prep: The triangle of forces for three forces in equilibrium
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Spot My Mistake: Drawing the triangle of forces to scale to find an unknown force
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Worked Example: Using the sine rule on the triangle of forces
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Explain Back: The units of a moment, and why they are newton metres
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Quiz: The point about which the total moment of a set of forces vanishes
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Spot My Mistake: Using concurrence to find the direction of an unknown third force
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Quiz: A rod resting against a wall, and the concurrence of its three forces
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Worked Example: Matching each force to the sine of the angle opposite it
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