1,334 prompts matching "Quiz: The formula for the nth term of an arithmetic progression"
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Explain Back: Showing that AB and BA are usually different for 2 by 2 matrices
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WAEC Prep: The identity matrix of order three
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WAEC Prep: Reading the order of a matrix as rows by columns
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Practice: The condition on the orders for a product to exist
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WAEC Prep: Expanding a 3 by 3 determinant down a column
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WAEC Prep: Setting out Cramer's rule for three simultaneous equations
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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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WAEC Prep: The adjoint of the identity matrix
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Learn: Swapping and negating the entries when inverting a 2 by 2 matrix
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WAEC Prep: When the matrix method is worth the work for three unknowns
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Practice: Comparing the inverse method with elimination for three equations
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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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Worked Example: The weight of a body as mass times g
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WAEC Prep: Resolving a force into horizontal and vertical components
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WAEC Prep: A table of components used to find a resultant
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Explain Back: Showing that a system of concurrent forces is in equilibrium
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WAEC Prep: The forces on a body suspended by a single string
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Learn: A space diagram and a force diagram drawn side by side
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