755 prompts matching "The area under a straight line checked by a trapezium"
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Surds arising from Pythagoras' theorem
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Comparing the size of two surds
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Multiplying three surds together
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Finding n(A union B) using the formula
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Set theory laws: commutative and associative
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Reviewing set theory before a class test
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Finding the nth term of an arithmetic sequence
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Finding the common difference from given terms
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Finding the nth term of a geometric sequence
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Finding the common ratio from given terms
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Sum of the first n terms of a geometric series
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Applying the sum to infinity formula when the ratio lies between minus one and one
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Deriving the geometric series sum formula
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Finding the first term or common difference from the sum formula
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Sum of the first n odd numbers
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Explaining the difference between a sequence and a series
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Alternating sequences and their pattern
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Distance from a point to the centre of a circle
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Factorising the difference of two squares
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Factorising the sum and difference of two cubes
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