831 prompts matching "Rationalising a denominator with three surd terms"
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Explain Back: The determinant of a product as the product of the determinants
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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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WAEC Prep: Cramer's rule applied to a pair with fractional coefficients
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Worked Example: Forming the determinant Dy by replacing the second column
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Explain Back: What a coefficient determinant of nought says about the system
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Practice: Turning a minor into a cofactor with the sign rule
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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: Simultaneous equations with fractional coefficients solved by matrix
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Worked Example: Checking the solution of three equations by substitution
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WAEC Prep: The weight of a body on the moon compared with on earth
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WAEC Prep: The angle the resultant makes with the larger of two forces
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WAEC Prep: The triangle of forces used together with the cosine rule
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Worked Example: The total moment of three parallel forces about one end
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Practice: Resolving three forces in two perpendicular directions
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Worked Example: Finding a particular term of a binomial expansion
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WAEC Prep: Comparing the mean with the variance of a binomial distribution
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WAEC Prep: The standard normal distribution, with mean nought and variance one
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Worked Example: The distance between two points in three dimensions
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Quiz: The direction of a vector as an angle with the x-axis
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