1,323 prompts matching "Testing the integers for closure under division"
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Teach me Cramer's rule from first principles
I am in SS 3. Teach me Cramer's rule as if I've never seen it before, starting from why de
Show All Working: A three-set Venn diagram drawn from a subject survey
Act as my WAEC Further Mathematics examiner. I am in SS 3. Set me a question on a three-se
Common Mistakes: Showing that intersection distributes over union
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Show All Working: Solving an equation written in terms of a binary operation
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Common Mistakes: A binary operation defined by arithmetic modulo n
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Worked Example: Collecting like surds in a single sum
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Worked Example: Simplifying an expression carrying both a negative and a fractional index
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Common Mistakes: Solving an exponential equation using logarithms
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Worked Example: Finding one over alpha plus one over beta
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Worked Example: Evaluating a polynomial by substitution
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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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WAEC Prep: Finding a coefficient of a cubic given one of its roots
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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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WAEC Prep: Writing a solution set in interval notation
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Show All Working: Solving a pair of simultaneous linear inequalities
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WAEC Prep: Circular permutations of n objects round a table
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Common Mistakes: Selections in which at least one of a kind must appear
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Worked Example: Solving cos x equals a negative value, and finding both solutions
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