1,327 prompts matching "Learn: Why any non-zero number to the power nought is one"
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Spot My Mistake: Checking cofactors by expanding the determinant along a second row
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WAEC Prep: The order in which the cofactors are transposed
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WAEC Prep: The adjoint as the transpose of the matrix of cofactors
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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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WAEC Prep: How long the inverse of a 3 by 3 matrix takes, and how to shorten it
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Learn: The order of the steps in inverting a 3 by 3 matrix
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WAEC Prep: The newton, and how it is defined
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Learn: Converting a weight given in kilogram-force into newtons
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Learn: The resultant of two perpendicular forces
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WAEC Prep: The component of a force at thirty degrees to the horizontal
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Learn: The component of a force along a stated direction
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WAEC Prep: The triangle of forces used together with the cosine rule
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Spot My Mistake: Drawing the triangle of forces to scale to find an unknown force
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WAEC Prep: The two conditions for a rigid body to be in equilibrium
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Worked Example: Drawing the polygon of forces to scale
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WAEC Prep: The resultant moment of a couple and a force together
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WAEC Prep: The total moment of two forces about the same point
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Worked Example: The total moment of three parallel forces about one end
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Learn: The algebraic sum of moments when the senses differ
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