1,322 prompts matching "Why the logarithm of a negative number does not exist"
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Quiz: Multiplying two surds and simplifying the result
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Quiz: Solving an index equation by writing both sides to the same base
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Practice: The condition for a quadratic equation to have equal roots
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WAEC Prep: Forming an equation whose roots are each two more than the original
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Practice: Finding alpha minus beta from the sum and the product
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Quiz: The factor theorem, and testing whether x minus a is a factor
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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 relations between roots and coefficients for a quartic
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Worked Example: Solving a quadratic inequality by sketching the parabola
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Practice: Solving an inequality with the unknown in the denominator
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Explain Back: Arrangements in which two particular objects must stay together
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Worked Example: The difference between a permutation and a combination
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Spot My Mistake: The identity that n choose r equals n choose n minus r
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Worked Example: The identities for one plus tan squared and one plus cot squared
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Spot My Mistake: The double angle formula for sine
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Quiz: The tangent curve and its asymptotes
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Worked Example: The midpoint formula applied to a given segment
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Spot My Mistake: The general form ax plus by plus c equals nought
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WAEC Prep: Proving two given lines parallel from their gradients
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Quiz: Finding the centre and the radius from the general equation
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