1,334 prompts matching "The logarithm of one, in any base"
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WAEC Prep: The order of a matrix formed from a table of data
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Learn: Deciding whether a stated matrix calculation is possible at all
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Spot My Mistake: Forming the determinant Dx by replacing the first column
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Worked Example: Forming the determinant Dy by replacing the second column
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Quiz: Arranging the equations in standard form before applying Cramer's rule
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WAEC Prep: The cofactor of a corner entry
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WAEC Prep: Why the cofactor signs alternate
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Worked Example: The identity that A times its adjoint gives the determinant times the identity
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Learn: Swapping and negating the entries when inverting a 2 by 2 matrix
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Quiz: Checking an inverse by multiplying to get the identity
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Explain Back: Solving two simultaneous equations by multiplying by the inverse
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Spot My Mistake: Why the inverse must be applied on the correct side
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Practice: What a singular coefficient matrix says about the equations
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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 resultant of two equal forces at sixty degrees
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Spot My Mistake: Compounding three forces acting at one point
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WAEC Prep: The angle the resultant makes with the larger of two forces
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WAEC Prep: Why one component vanishes when the direction is chosen well
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