si'impetotki fu'ivla

x1 (value, state, form) is the asymptote/limit [Calculus sense] of x2 as independent variable x3 tends toward x4 along path x5

x1 is asymptotic (one sense); x2 is asymptotic (different sense). Although usually used in English when an extreme value is involved (in either x1 or x4) the Lojban usage can probably be pretty general and mean "limit along a path"; in this usage, delete x5 for "limit" in the stronger sense.