1,334 prompts matching "The sum of an arithmetic progression with a negative common difference"
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WAEC Prep: Completing a Cayley table for an operation on a small set
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Learn: Simplifying a surd by extracting the largest perfect square
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Worked Example: Collecting like surds in a single sum
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Show All Working: Expressing a number in the form a root b
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Common Mistakes: Solving an exponential equation using logarithms
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Show All Working: Solving a quadratic by completing the square
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Spot My Mistake: Forming an equation whose roots are alpha squared and beta squared
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WAEC Prep: Forming an equation whose roots are alpha over beta and beta over alpha
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Show All Working: Finding a coefficient given a stated relation between the roots
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Common Mistakes: Adding, subtracting and multiplying two polynomials
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Spot My Mistake: Arrangements in which two particular objects must be kept apart
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Spot My Mistake: The identity that n choose r equals n choose n minus r
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Common Mistakes: Selections in which at least one of a kind must appear
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Learn: Solving sin x equals a given value between 0 and 360 degrees
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Spot My Mistake: Solving an equation by first applying a Pythagorean identity
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WAEC Prep: Solving an equation by first applying a double angle formula
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Show All Working: Solving a cos x plus b sin x equals c by the R method
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Common Mistakes: Sketching two trigonometric curves on the same axes to find where they meet
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Spot My Mistake: The general form ax plus by plus c equals nought
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WAEC Prep: Proving two given lines parallel from their gradients
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