What is the value of the median in a set of seven numbers if the sum of the second highest and the lowest number is equal to the sum of the third highest and the second lowest number?
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What is the derivative of g(x) = f(x^2 + 2x) with f(x) defined as f(x) = sin(2x) + ln(x)?
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What is the total number of diagonals in a decagon?