1,322 prompts matching "Proving the sum formula for a geometric progression"
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Quiz: Solving a matrix equation of the form A plus X equals B
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Worked Example: The associative law for the product of three matrices
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WAEC Prep: The order of a matrix formed from a table of data
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WAEC Prep: Stating the order of a product before working it out
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Practice: The condition on the orders for a product to exist
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WAEC Prep: Setting out the coefficient determinant for two simultaneous equations
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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: Checking the determinant before attempting a 3 by 3 inverse
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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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WAEC Prep: A particle, and what the word assumes
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WAEC Prep: A rigid body, and what the word assumes
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WAEC Prep: The resultant of two equal forces at sixty degrees
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WAEC Prep: The resultant of two forces acting at the same point
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Practice: The parallelogram law of forces
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Explain Back: The resultant of two forces acting in the same straight line
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WAEC Prep: The angle the resultant makes with the larger of two forces
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WAEC Prep: The magnitude of the resultant of two forces inclined at an angle
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