1,332 prompts matching "Give me a 5-minute recap of complex numbers"
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Worked Example: Testing whether a binary operation is closed on a given set
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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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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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Learn: The multiplication and division laws of indices used together
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Explain Back: The laws of logarithms for a product and for a quotient
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Spot My Mistake: The power law of logarithms
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WAEC Prep: The change of base formula for logarithms
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Learn: The sum and the product of the roots read from the coefficients
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Quiz: Forming a quadratic equation whose roots are given
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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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Learn: The degree of a polynomial and its leading coefficient
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Explain Back: Finding an unknown coefficient given that a stated factor divides the polynomial
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Spot My Mistake: The factor theorem for a divisor of the form ax minus b
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Learn: The sum of the roots of a cubic read from its coefficients
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Quiz: The product of the roots of a cubic
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Explain Back: Forming a cubic equation whose three roots are given
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Show All Working: Three roots in arithmetic progression in a cubic
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