Complex sentence: One also sees +0 and -0 in calculus and mathematical analysis when evaluating certain limits; this notation refers to the behaviours of a function as the input variable approaches 0 from positive or negative values respectively, which are not necessarily indistinct.
Split into simpler sentences: One also sees +0 and -0 in calculus and mathematical analysis when evaluating certain limits. This notation refers to the behaviour of a function as the input variable approaches 0 from positive or negative values respectively; these behaviours are not necessarily indistinct.