1,307 prompts matching "Learn: Solving an equation by writing both sides to the same base"
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Spot My Mistake: Checking cofactors by expanding the determinant along a second row
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WAEC Prep: The inverse of a 2 by 2 matrix with a fractional determinant
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WAEC Prep: The inverse of a 2 by 2 matrix as one over the determinant times the adjoint
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Quiz: Checking an inverse by multiplying to get the identity
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Practice: Why a 2 by 2 matrix with determinant nought cannot be inverted
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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: The inverse of a 3 by 3 matrix from its adjoint and its determinant
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Learn: The order of the steps in inverting a 3 by 3 matrix
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WAEC Prep: Resolving a force into horizontal and vertical components
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WAEC Prep: A lamp hanging from two wires, solved by Lami's theorem
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Learn: Finding two unknown forces by Lami's theorem
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Explain Back: Testing whether data are Poisson by comparing mean and variance
I have just studied testing whether data are Poisson by comparing mean and variance in my
WAEC Prep: The probability that a normal variable exceeds the mean by more than one standard deviation
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WAEC Prep: Writing a two-dimensional vector in i and j form
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WAEC Prep: Writing a three-dimensional vector in i, j and k form
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WAEC Prep: Converting the vector equation of a line into Cartesian form
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WAEC Prep: Writing a force as a vector in i and j form
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Spot My Mistake: Dividing one complex number by another using the conjugate
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WAEC Prep: Solving a quadratic whose discriminant is negative
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