442 prompts matching "Showing distributivity fails by a counter-example"
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IGCSE Additional Maths Y11: The symmetry of the sine and cosine graphs — Show All Working
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IGCSE Additional Maths Y11: The graph of a trigonometric function drawn in radians — Common Mistakes
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IGCSE Additional Maths Y11: The identity for one minus cos squared — Show All Working
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IGCSE Additional Maths Y11: Proving an identity in the Cambridge 'show that' style — Common Mistakes
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IGCSE Additional Maths Y11: Finding every solution rather than only the first — Show All Working
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IGCSE Additional Maths Y11: Checking that the solutions lie in the stated range — Common Mistakes
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IGCSE Additional Maths Y11: Solving an equation that contains sec x — Show All Working
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IGCSE Additional Maths Y11: The graph of y equals sec x on its own — Common Mistakes
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IGCSE Additional Maths Y11: Permutations where one item is fixed in place — Show All Working
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IGCSE Additional Maths Y11: Combinations and permutations combined in one problem — Show All Working
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IGCSE Additional Maths Y11: Telling nPr from nCr in the wording of a question — Common Mistakes
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IGCSE Additional Maths Y11: The greatest coefficient in an expansion — Show All Working
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IGCSE Additional Maths Y11: Equating coefficients to find an unknown constant — Common Mistakes
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IGCSE Additional Maths Y11: The negative of a vector — Show All Working
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IGCSE Additional Maths Y11: Writing a vector in terms of two base vectors — Common Mistakes
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IGCSE Additional Maths Y11: Proving a quadrilateral is a parallelogram using vectors — Show All Working
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IGCSE Additional Maths Y11: Finding the ratio in which two lines cut one another — Common Mistakes
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IGCSE Additional Maths Y11: The shortest distance between two moving objects — Show All Working
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IGCSE Additional Maths Y11: A bearing written as a vector direction — Common Mistakes
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IGCSE Additional Maths Y11: The second derivative, and how it is written — Show All Working
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