1,301 prompts matching "A savings problem modelled by an arithmetic progression"
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WAEC Prep: Sketching a cubic from its factorised form
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Learn: The sum of the roots of a cubic read from its coefficients
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Worked Example: The sum of the products of the roots of a cubic taken two at a time
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Quiz: The product of the roots of a cubic
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Practice: Finding the third root of a cubic when two are known
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WAEC Prep: Finding a coefficient of a cubic given one of its roots
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Final Revision: Checking that the roots found satisfy the original equation
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Quiz: Solving a quadratic inequality using a sign table
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WAEC Prep: Writing a solution set in interval notation
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WAEC Prep: Circular permutations of n objects round a table
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Quiz: Choosing a committee of r people from n
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Practice: Choosing a committee that must contain one particular person
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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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Common Mistakes: Expressing a cos x plus b sin x in the form R cos of x minus alpha
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Common Mistakes: Giving the general solution of a trigonometric equation
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Practice: The effect of a in y equals a sin x
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Spot My Mistake: The effect of c in y equals sin x plus c
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WAEC Prep: A phase shift in y equals sin of x minus d
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Common Mistakes: Sketching two trigonometric curves on the same axes to find where they meet
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