1,190 prompts matching "IGCSE Additional Maths Y11: When cot x is nought, and when it is undefined — Exa"
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Worked Example: Evaluating a polynomial by substitution
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Explain Back: Finding an unknown coefficient given that a stated factor divides the polynomial
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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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Explain Back: Forming a cubic equation whose three roots are given
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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: Solving an inequality that involves a modulus
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Worked Example: The number of arrangements of n different objects in a row
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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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Practice: Choosing a committee that must contain one particular person
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Explain Back: Choosing a committee with a stated number from each of two groups
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Practice: The compound angle formula for cosine of A minus B
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Explain Back: The compound angle formula for tan of A plus B
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Worked Example: Solving cos x equals a negative value, and finding both solutions
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Practice: Solving an equation of the form sin of 2x equals a given value
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Explain Back: Solving a quadratic in sin x
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Worked Example: The shape, period and range of the cosine curve
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Practice: The effect of a in y equals a sin x
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Explain Back: The effect of b in y equals sin bx on the period
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