755 prompts matching "The chain rule applied twice in one problem"
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Combining several index laws in one simplification
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Explaining why a^1/n means the nth root of a
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Simplifying the square root of a larger number
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Multiplying two surds together
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Rationalising using the conjugate
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Estimating the value of a surd
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Comparing the size of two surds
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Rationalising and then simplifying fully
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Rationalising the denominator when it's a surd minus a surd
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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 number of terms in an arithmetic series
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Finding the common ratio from given terms
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Deciding whether a geometric series converges
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Finding a term given the sum of a series
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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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Finding the point of intersection of two lines
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Finding where a line crosses the x-axis and y-axis
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Distance from a point to the centre of a circle
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