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1. In calculus, the slope of a function at a point. It is found by taking the limit of (f(x + h) - f(x)) / ((x + h) - x) where h (also s..
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Engaging in the act of wanking having pre-planned the desired time, location, and length of time in which the act of wanking should occu..
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It is the higher level of any group.
upper echelon in the military refers to people of higher ranks (usually officers) in everyday life..