What is the simplified form of the square root function f(x) = β(4x^2 + 9) - β(9 - x^2)?
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What is the median of a set of numbers with an odd count and a range from 10 to 20?
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What is the standard equation of a hyperbola with a center at (h,k), a horizontal transverse axis of length 2a, and a vertical conjugate axis of length 2b?