1) elementary and higher solution
初高等解法
3) elementary solution
初等解
1.
It is proved that a kind of second order linear delay differential equation with consistant coefficient has elementary solution in this paper,and then analytic expression formula of the elementary solution is given.
证明了一类二阶常系数线性时滞微方程存在初等解 ,并给出了初等解的解析表达
2.
applying Theorem 3 and Inference 2,Theorem 4 achieves two kinds of the elementary solution and its existing conditions of the Riccati equation.
研究Riccati方程的积分因子 μ =e2F,定理 1得到 μ =e2F 的表达式 ,定理 2和推论 1得到 μ =e2F 的无限形式 ,定理 3和推论 2得到 μ=e2F 的有限形式及其存在条件 ,定理 4应用定理 3和推论 2得到Riccati方程的两类初等解及其存在条件 ,最后说明文献 [1]的结果是本文结果的特
3.
Homogeneous equation、oneorder linear equation and Bernoulli equation are the particular cases of this type:As their application, we has discussed the integtability of the Riccati equation and the second order variable coefficient linear homogeneous differential equation, abtaied a sufficient condition for elementary solution.
齐次方程、一阶线性方程、具努利方程都是这类型的特例，作为应用，文对讨论了Ｒｉｃｃａｔｉ方程和变系数二防线性齐次微分方程的可积性，得到它们有初等解的一个充分条件。
4) elementary analytic solution
初等解析解
1.
A sufficient condition for the first order variable coefficient linear delay differential equation having elementary analytic solution is given,and so is the analytic expression formula of general solution.
给出了一阶线性时滞微分方程有初等解析解的充分条件 ,同时给出了其通解的解析表达
2.
In this paper, the expession formula of elementary analytic solution of two types of delay differential equations.
给出了两类时滞微分方程初等解析解的表达式。
5) Primary solving method of the material strength
材料力学初等解法
6) method of advanced algebra
高等几何解法
补充资料：鞍山钢铁(集团)公司第二初轧厂1150初轧机轧制钢锭
鞍山钢铁(集团)公司第二初轧厂1150初轧机轧制钢锭
鞍山钢铁(集团)公司第二初轧厂1150初轧机轧制钢锭
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
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