The author discusses a class of general of singular boundary value problems by using the first integral method, and the necessary and sufficient condition of positive solutions was obtained.
运用首次积分法讨论了较广泛的一类常微分方程边值问题，得到了正解存在的充要条件。
By using the weak maximum principle, the uniqueness and stability of the solution of water vapour equation with the first, second and third boundary-value problems were proven.
利用该弱极大值原理，证明了对于第一类、第二类和第三类边值问题，水汽方程解的唯一性和稳定性。
The existence theorem of a class of periodic boundary value problems for first order nonlinear integrodifferential equations is obtained through the method of lower and upper solutions.
研究了一类纯量形式非线性积分微分方程周期边值问题，利用上下解法证明了解的存在性。
Similar boundary-value problems are associated with expected first-exit times of the membrane potential in models of nerve.
在神经细胞模型中，关于膜电位的第一期望离开时间有类似的边值问题。
In part II, by the same way, we consider first-order impulsive differential equations with integral boundary value problems.
在第二部分中，同样的方法，我们讨论了一阶脉冲微分方程积分边值问题。
According to the principle, potential coefficients can be obtained directly in solving the mixed boundary value problems of first, second and third type.
根据这一原理可解第一、第二和第三边值问题的混合边值问题直接求得位系数。
The 2-d em boundary value problems with curved boundaries are first treated by the method of lines based on the matrix Theory.
本文首次将基于矩阵理论的直线法推广到曲线边界的二维电磁场问题。
The 2-d em boundary value problems with curved boundaries are first treated by the method of lines based on the matrix Theory.
本文首次将基于矩阵理论的直线法推广到曲线边界的二维电磁场问题。
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