Abstract: The first order fuzzy differential equations with initial value problem is studied by using the π-differentiability concept, and the fuzzy differential equations will be translated into two ordinary differential equations and the approximate solutions is obtained by variational iteration method. One illustrated example is provided.

Key words: fuzzy differential equation, π-differentiability, variational iteration method, approximate solutions

摘要： 在模糊值函数具有π-导数意义下研究一阶模糊微分方程的模糊初值问题，将模糊微分方程转化成同解的常微分方程，利用变分迭代算法给出方程的近似解，给出了具体算例。

关键词: 模糊微分方程, &pi, -导数, 变分迭代法, 近似解