1,331 prompts matching "IGCSE Additional Maths Y11: Checking an answer for reasonableness — Show All Wor"
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Common Mistakes: Symmetric functions when the three roots of a cubic are involved
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Worked Example: Evaluating a polynomial by substitution
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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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Common Mistakes: Three roots in geometric progression in a cubic
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Worked Example: Solving a quadratic inequality by sketching the parabola
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Common Mistakes: Selections in which at least one of a kind must appear
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Common Mistakes: Giving the general solution of a trigonometric equation
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Common Mistakes: Sketching two trigonometric curves on the same axes to find where they meet
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Common Mistakes: Identifying a conic from a general second-degree equation
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Worked Example: Relative velocity when two bodies move along the same line
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Common Mistakes: The relative displacement of two bodies after a given time
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Worked Example: The common acceleration of two connected particles
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Common Mistakes: What becomes of the tension when the string goes slack
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Worked Example: The normal reaction on a body resting on a smooth incline
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Common Mistakes: The energy of a body in simple harmonic motion
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Worked Example: The tension in a stretched elastic string
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Structured question: solve a logarithmic equation with two conditions
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Structured question: perpendicular bisector of a line segment
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Structured question: prove a trigonometric identity
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Structured question: geometric progression with two given terms
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