1,326 prompts matching "Rationalising the denominator when it's a surd minus a surd"
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Quiz me on recognising which command word fits a blank exam question
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Worked Example: The associative law for the product of three matrices
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Practice: The transpose of a 2 by 3 matrix
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Practice: The sign pattern of the cofactors in a 3 by 3 determinant
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Worked Example: Evaluating a 3 by 3 determinant by the rule of Sarrus
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Worked Example: Forming the determinant Dy by replacing the second column
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Practice: What a singular coefficient matrix says about the equations
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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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Practice: The parallelogram law of forces
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Worked Example: The direction of the resultant of two forces
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Practice: Choosing the most convenient pair of directions to resolve along
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Practice: The direction of the resultant of several coplanar 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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Practice: Why the forces must sum to nought in two perpendicular directions
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Worked Example: Drawing the polygon of forces to scale
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Worked Example: The total moment of three parallel forces about one end
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Practice: The variance of a binomial distribution as npq
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Worked Example: The distance between two points in three dimensions
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