We discuss the stability of a kind of neutral delayed linear differential equation, and obtain the stability criterion of this equation. 摘要討論了一類(lèi)中立型線(xiàn)性微分方程的穩定性，得到其零點(diǎn)穩定的充分判別準則。
The method of undetermined coefficients is the general method of solving a linear differential equation with constant coefficients of the second order. 摘要二階常系數線(xiàn)性微分方程可用常規方法待定系數法求解。
