And the numerical solutions of difference equation are regarded as the approximate solutions for the differential equation.

文中首先對對稱正則長波方程提出了一個兩層和兩個三層的有限差分格式cao美女视频。

No reasonable scientific or theoretical basis is given to explain the jump from difference equation to differential equation till now.

從差分方程到微分方程的跨越无套系列.梦久久，缺乏充分的科學基礎和理論依據(jù)。

This model is a group of partial differential equations. Th solution is obtained with finite difference method to give a differential equation of gas pressure, temperature and rate and its calculation step.

該模型是一組偏微分方程人人透人人操人人干，采用有限差分法對其進行求解欧美A片大全，給出了計算氣體壓力、溫度日韩精品老熟女视频网站免费、速度的差分方程和詳細的計算步驟免费第一黄色。

Then, we examine the general random walk model in mathematics and derive a two-order difference equation and its corresponding differential equation.

為了得到可與生物試驗加以比較的結論，需要求解在給定邊界條件下的關于隨機蕩步模型的二階差分方程美女视频性色毛片全是黄色的。

Transpiration ; mathematical analysis ; heat transfer ; differential equation ; difference equation.

發(fā)汗天堂网黄色视频；數(shù)學分析；熱傳導人人操,人人草；微分方程天堂网在线资源欧美人XXXX日韩；差分方程

It's proved that the long duration response is stable under stationary random excitation, when the mean equation of the temperature in all parts of heat conductor shows no difference with the heat conduction differential equation under classical stationary heat conduction condition.

研究表明，在平穩(wěn)隨機激勵下免费日韩黄色片品尚网，導熱系統(tǒng)的長時間響應也是平穩(wěn)的国产精品2018不卡在线观看。

In the PFD, both the differentials and non-differential terms in the differential equation are discretized, and the coefficients of the power series are determined by means of eliminating the truncation error of the corresponding modified scheme, then the high accurate difference scheme is obtained.

攝動有限差分方法在微分方程的差分近似中，離散微商項的同時精品视频国产狼友第28页，也離散非微商項日韩网络福利直播网站在线观看视频，把非微商項攝動展開成網(wǎng)格步長△x的冪級數(shù)，并通過提高差分格式相應修正微分方程誤差階的方法求出攝動冪級數(shù)系數(shù)性欧美野外激情，從而獲得高精度差分格式欧美性网入口。

Using difference method, the first-order and the second-order differential equations of fractional derivative can become the first-order ordinary differential equation, and the high precision direct integration can be used for the solution.

所論方法首先引入差分格式，將含有分數(shù)階導數(shù)的一階和二階微分方程變?yōu)橐浑A的常微分方程女生被男生操的黄色网站，然后再用精細積分方法逐步積分進行求解www,国产原创Com。。

METHODS The partial differential equation is reduced into a set of ordinary differential equations by using finite difference method.

采用有限差分方法，將偏微分方程組約化為常微分方程組A片网站视频在线观看。

Main contents are as follows :In chapter one, we give a survey to the development and current state of the oscillation of differential equations and difference equations. We also introduce some preliminary material , including some basic concepts of the oscillation theory and some important fixed point theorems.In chapter two, we investigate the oscillation of second order self-conjugate differential equation with impulses.

本文由五章組成另类黑人欧美啪啪亚洲图片，主要內容如下：第一章概述了微分方程及差分方程的應用背景和國內、外研究狀況女性自慰A级毛片，這一章也包括一些預備知識三级黄,色，如有關微分方程、差分方程理論的基本概念和重要的不動點定理色页视频。