两类三阶线性微分方程的降阶条件
Descending Order Condition of Two Forms of Third-order Linear Differential Equations
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摘要: 借助于自变量代换,得到了两种三阶线性微分方程的可降阶新类型.Abstract: Application of the transformations of independent variable, descending order conditions of two new forms of third-other linear differential equations with variable coefficients are obtained.