1,045 prompts matching "Find the range of x for which y = x^3 - 3x is increasing"
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Common Mistakes: Writing down the roots once the brackets are found
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Worked Example: Halving the coefficient of x and squaring it
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WAEC Prep: The minimum value of a quadratic found by completing the square
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Worked Example: The product of the roots as c over a
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Quiz: Finding the sum and the product without solving the equation
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Quiz: The value of one over alpha squared plus one over beta squared
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Common Mistakes: A symmetric function needing the sum and product twice over
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Final Revision: Using a symmetric function to find an unknown coefficient
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Practice: The condition for the line to be a tangent
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Common Mistakes: A line and a curve meeting once without the line being a tangent
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Worked Example: The degree of a polynomial in one variable
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Explain Back: Evaluating P of 2 for a given polynomial
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Common Mistakes: Multiplying one polynomial by another
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Spot My Mistake: Finding two coefficients from two remainder conditions
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Common Mistakes: The remainder theorem applied to a quartic
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Explain Back: Finding a coefficient so that a stated expression is a factor
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Quiz: The truth value of a simple proposition
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WAEC Prep: The symbols used for and, or and not
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Quiz: Disjunction and the inclusive or
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Common Mistakes: Comparing two statements by their truth tables
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