1,334 prompts matching "The decimal expansion of an irrational number, and why it never repeats"
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WAEC Prep: The difference between pre-multiplying and post-multiplying by a matrix
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Explain Back: The rule that the transpose of a product reverses the order
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WAEC Prep: The identity matrix, and what it does in a product
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Quiz: The zero matrix, and how it differs from nought in arithmetic
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Explain Back: The order of the answer when two matrices are multiplied
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Explain Back: The determinant of a product as the product of the determinants
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WAEC Prep: Expanding a 3 by 3 determinant along the first row
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Worked Example: Evaluating a 3 by 3 determinant by the rule of Sarrus
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Explain Back: What a coefficient determinant of nought says about the system
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Quiz: Arranging the equations in standard form before applying Cramer's rule
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Learn: Swapping and negating the entries when inverting a 2 by 2 matrix
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WAEC Prep: A particle, and what the word assumes
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WAEC Prep: A rigid body, and what the word assumes
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WAEC Prep: The difference between a kilogram and a kilogram weight
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WAEC Prep: The newton, and how it is defined
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Explain Back: The resultant of two forces acting in the same straight line
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Worked Example: The direction of the resultant of two forces
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Worked Example: Marking the weight, the normal reaction and the friction on a diagram
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Worked Example: Using the sine rule on the triangle of forces
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WAEC Prep: Friction, and the direction in which it acts
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