1,141 prompts matching "IGCSE Additional Maths Y11: Differentiating a term with a negative index — Spot"
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Worked Example: What a determinant of nought means for a 2 by 2 matrix
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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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Quiz: Solving three simultaneous equations with the inverse matrix
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Practice: Comparing the inverse method with elimination for three equations
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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: 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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Spot My Mistake: The proportion of a normal distribution within one, two and three standard deviations
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WAEC Prep: The standard normal distribution, with mean nought and variance one
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Practice: Using the normal tables when the z-score is negative
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