What is the standard deviation of a set of numbers: 5, 8, 12, 16, 20, 25, 27, 30?
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What is the limit of (ln(x) - ln(1+x) - x) / (x^2) as x approaches 0?
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What is the equation for a hyperbola with center at (h, k), vertical transverse axis, length of transverse axis equal to 2a, and distance between foci equal to 2c? (