Duffing differential equation
related: phase portrait
broader: second order ordinary differential equation
preferred label: معادله دیفرانسیل دوفینگ @fa
type: Concept

second order ordinary differential equation
preferred label: معادلات دیفرانسیل معمولی مرتبه ی دوم @fa
type: Concept
narrower: Duffing differential equation

phase portrait
preferred label: تصویر فاز @fa
type: Concept
related: Duffing differential equation