1,319 prompts matching "A remainder of nought, and what it means"
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Explain Back: The symmetric difference of two sets
I have just studied the symmetric difference of two sets in my SS3 Further Mathematics cla
Spot My Mistake: De Morgan's law that the complement of a union is the intersection of the complements
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WAEC Prep: The number of elements in the union of two sets
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Spot My Mistake: Finding the inverse of an element under a binary operation
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Common Mistakes: A binary operation defined by arithmetic modulo n
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Explain Back: Rationalising a denominator of the form a plus root b using the conjugate
I have just studied rationalising a denominator of the form a plus root b using the conjug
Common Mistakes: Solving an equation in which the unknown sits under a root
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Common Mistakes: Solving an exponential equation using logarithms
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Explain Back: The range of values of k for which the roots are real
I have just studied the range of values of k for which the roots are real in my SS3 Furthe
Spot My Mistake: Forming a new equation whose roots are the reciprocals of the original
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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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Common Mistakes: Symmetric functions when the three roots of a cubic are involved
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Spot My Mistake: The factor theorem for a divisor of the form ax minus b
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Common Mistakes: Adding, subtracting and multiplying two polynomials
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Quiz: The product of the roots of a cubic
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Show All Working: Three roots in arithmetic progression in a cubic
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Quiz: The number of arrangements of r objects chosen from n
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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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