755 prompts matching "Setting out the coefficient determinant for two simultaneous equations"
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Practice: Finding the twentieth term of a given arithmetic progression
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Final Revision: Inserting an arithmetic mean between two numbers
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Quiz: The sum of the first fifty natural numbers
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Practice: Finding n when the sum of an arithmetic progression is given
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Explain Back: Finding the first term from the sum and the common difference
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Spot My Mistake: The sum of an arithmetic progression with a negative common difference
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Worked Example: Finding the common ratio of a geometric progression
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Practice: Finding the eighth term of a given geometric progression
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Spot My Mistake: Finding the common ratio when the third and sixth terms are given
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Common Mistakes: Inserting a geometric mean between two numbers
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Quiz: The sum of the first six terms of a given geometric progression
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Practice: Finding n when the sum of a geometric progression is given
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Explain Back: The sum of a geometric progression with a negative common ratio
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Learn: The four inequality symbols, and what each one means
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Worked Example: Adding or subtracting the same number on both sides
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Practice: Reversing the sign when multiplying by a negative number
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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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