1,322 prompts matching "Why the logarithm of a negative number does not exist"
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WAEC Further Mathematics: complex numbers and Argand diagram question
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Worked Example: The intersection of two overlapping sets
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Quiz: The complement of a set within a stated universal set
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Practice: The difference of two sets, A minus B
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Explain Back: The symmetric difference of two sets
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Spot My Mistake: De Morgan's law that the complement of a union is the intersection of the complements
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Final Revision: The power set, and how many subsets a set of n elements has
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Explain Back: Finding the identity element of a binary operation
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Spot My Mistake: Finding the inverse of an element under a binary operation
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Practice: Rationalising a denominator of the form root a
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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
WAEC Prep: Comparing the sizes of two surds without a calculator
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Worked Example: The discriminant, and what each of its three cases means
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Explain Back: The range of values of k for which the roots are real
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Spot My Mistake: Forming a new equation whose roots are the reciprocals of the original
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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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Final Revision: The zeros of a polynomial and where its graph cuts the x-axis
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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
Act as my SS3 Further Mathematics tutor and quiz me on the product of the roots of a cubic