1,326 prompts matching "WAEC question on measures of dispersion"
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Common Mistakes: Solving an exponential equation using logarithms
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Common Mistakes: Proving that a quadratic expression is positive for every real x
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Final Revision: Solving a disguised quadratic by substitution
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Show All Working: Finding a coefficient given a stated relation between the roots
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Final Revision: Checking a symmetric-function answer by solving the equation outright
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Show All Working: Solving a cubic equation by factorisation
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Common Mistakes: Adding, subtracting and multiplying two polynomials
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Show All Working: Three roots in arithmetic progression in a cubic
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Common Mistakes: Three roots in geometric progression in a cubic
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Final Revision: Checking that the roots found satisfy the original equation
Act as my WAEC Further Mathematics coach in the last week before the paper. I am in SS 3.
Show All Working: Solving a pair of simultaneous linear inequalities
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Show All Working: Arrangements of the letters of a given word
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Common Mistakes: Arrangements restricted at the first or the last place
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Final Revision: Counting the number plates or codes that can be formed under a rule
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Final Revision: Combinations used with the addition and multiplication principles
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Show All Working: The half angle formulae and the t-substitution
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Final Revision: Proving an identity by working on one side only
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Final Revision: Losing solutions by dividing through by cos x
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Common Mistakes: Sketching two trigonometric curves on the same axes to find where they meet
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Common Mistakes: The angle between two lines found from their gradients
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