462 prompts matching "Finding one over alpha plus one over beta"
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Quiz: The formula for the nth term of a geometric progression
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Final Revision: Deciding whether a given sequence is a geometric progression
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Learn: The formula for the sum of the first n terms of a geometric progression
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Quiz: The sum of the first six terms of a given geometric progression
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Explain Back: The sum of a geometric progression with a negative common ratio
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Spot My Mistake: A compound interest problem modelled by a geometric progression
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Final Revision: Proving the sum formula for a geometric progression
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Worked Example: Adding or subtracting the same number on both sides
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Quiz: Multiplying both sides by a positive number
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Explain Back: Solving a linear inequality that contains brackets
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Spot My Mistake: Solving a linear inequality that contains a fraction
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Final Revision: A word problem that leads to a linear inequality
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Learn: Factorising a quadratic before solving the inequality
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Worked Example: The critical values of a quadratic inequality
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Quiz: Using a sketch of the parabola to read off the solution
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Explain Back: The solution when the quadratic expression is greater than nought
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Spot My Mistake: The solution when the quadratic expression is less than nought
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Final Revision: A word problem that leads to a quadratic inequality
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Learn: What the modulus of a number means
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Worked Example: Solving the equation modulus of x equals a
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