A class of boundary value problems in singular perturbation theory of ODE is discussed by NSA and a condition about existing jump points in the given equations containing two small parametres is obtained,

• 本文用非标准分析方法讨论了常微分方程奇异摄动理论中一类边值问题,同时并给出了含双小参数方程存在跳跃点的条件。