1,045 prompts matching "The range of values of x for which an expression stays positive"
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Final Revision: Checking both solutions in both equations
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Spot My Mistake: A polynomial written in descending powers
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Quiz: Dividing a quartic by a quadratic
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Spot My Mistake: A division that leaves a linear remainder
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Spot My Mistake: Finding two coefficients from two remainder conditions
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Quiz: Factorising a polynomial by grouping terms
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Quiz: A cubic with three distinct real roots
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Common Mistakes: A cubic equation arising from a volume problem
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Worked Example: Sentences that are not propositions
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Final Revision: A compound proposition built from three simple ones
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Worked Example: Conjunction in a three-variable truth table
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Spot My Mistake: Building a truth table column by column
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Worked Example: What a contradiction is
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Quiz: What a contingency is
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Quiz: Modus ponens
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Spot My Mistake: Disjunctive syllogism
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Final Revision: A word problem about seating at a round table
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Final Revision: A word problem about choosing a delegation
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Final Revision: A word problem about a lottery draw
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IGCSE Additional Maths Y11: Sketching y equals 3 sin 2x — Explain It Back
I am in SS 2. I have just studied sketching y equals 3 sin 2x for Cambridge IGCSE Addition