The main idea of the finite difference method is as follows: We consider the discrete difference equation with the finite alphas as approximate substitution for the differential equation with the continuous variant and boundary conditions.

有限差分方法的基本思想是用離散的国产成人男女在线观看网站视频免费，只含有有限個(gè)未知數(shù)的差分方程去近似代替連續(xù)變量的微分方程及邊界條件av人人摸人人操人人舔，并把相應(yīng)的差分方程解作為微分方程的近似解黄免费。

This main approach is also coincidence degree theory. Moreover, when the time scale T is chosen as the sets of real or integer numbers, the existence of periodic solutions for its differential or difference equation are obtained respectively.

若分別選取時(shí)標(biāo)T為實(shí)數(shù)集或整數(shù)集時(shí)，則分別得到它的微分方程或差分方程周期解的存在性99这里只有精品99，這就避免了對(duì)這些生態(tài)系統(tǒng)的微分和差分方程周期解的存在性分別進(jìn)行討論日韩三级黄片。

To discuss deeply, this article use indirect means to research by difference differential equation, that is: using the Liyapnof function to discuss the time delay stability of one-dimensionality force telepresence system in order to determine the time delay limits which could ensue the system work normal.

為了進(jìn)一步深入討論，本文還從差分微分方程入手,一级不卡黄色视频免费观看，采用間接法進(jìn)行進(jìn)一步討論欧美性爱群交视频，即：利用李亞普諾夫函數(shù)對(duì)一維力覺(jué)臨場(chǎng)感系統(tǒng)的時(shí)延穩(wěn)定性進(jìn)行討論，確定保障系統(tǒng)正常工作的時(shí)延界限91色国产在线。

This article use the improved integral inequalities with the deviate variable and some skills of inequalities as well as related knowledge about second-order differential equation,to obtain the following results: the classification of limit point case or limit circle case and boundedness for second order differential or difference equation with deviative variable,discussed the classification for certain n-order differential equations,Criteria for the classification of second order differential equation with deviative variable.

本文利用推廣的具有偏差變?cè)姆e分不等式午夜AV福利网站，結(jié)合不等式的一些技巧以及常微分方程的相關(guān)知識(shí)對(duì)一類(lèi)二階具有偏差變?cè)奈⒎址匠碳耙活?lèi)二階差分方程極限圓型的分類(lèi)問(wèn)題作了相關(guān)的研究工作欧美动图，并且討論了一類(lèi)n階具有偏差變?cè)某Ｎ⒎址匠探獾钠椒娇煞e性與有界性和一類(lèi)二階非線(xiàn)性具有偏差變?cè)奈⒎址匠探獾挠薪缧浴?/p>

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(dòng)有限差分方法在微分方程的差分近似中，離散微商項(xiàng)的同時(shí)A片视频在线一区二区，也離散非微商項(xiàng)国产日本欧美中字视频二区，把非微商項(xiàng)攝動(dòng)展開(kāi)成網(wǎng)格步長(zhǎng)△x的冪級(jí)數(shù)，并通過(guò)提高差分格式相應(yīng)修正微分方程誤差階的方法求出攝動(dòng)冪級(jí)數(shù)系數(shù)欧美日韩va视频，從而獲得高精度差分格式CO∩Xingaiwww。

The main contents of this course include: the construction, convergence, compatibility and stability of finite difference scheme of elliptic equation, parabolic equation and hyperbolic equation, the construction method and computation format of finite difference scheme of a system of partial differential equations.

本課程主要內(nèi)容有：橢圓型方程的有限差分格式的構(gòu)造，有限差分格式的收斂性国产高清在线a视频大全在线，相容性及穩(wěn)定性免费黄图视频、拋物型方程的有限差分格式的構(gòu)造，有限差分格式的收斂性a级日韩黄片欧美，相容性及穩(wěn)定性、雙曲型方程的有限差分格式的構(gòu)造欧美日韩黄色小说小电影网，有限差分格式的收斂性欧美综合性爱，相容性及穩(wěn)定性、偏微分方程組的有限差分格式的構(gòu)造方法及有關(guān)的計(jì)算格式干人网站。

In this paper, a high order accuracy difference method is presented for solving unsteady convection diffusion equation by using Implicit Perturbation Finite Difference scheme.

本文利用攝動(dòng)差分思想国产爱在线，對(duì)定常對(duì)流擴(kuò)散方程中的空間微商系數(shù)進(jìn)行攝動(dòng)展開(kāi)，展開(kāi)冪級(jí)數(shù)系數(shù)通過(guò)消去攝動(dòng)格式修正微分方程的截?cái)嗾`差項(xiàng)求出久久avabb，由此獲得方程的隱式攝動(dòng)差分格式粉色视频又黄又爽免费，將此方法應(yīng)用于非定常對(duì)流擴(kuò)散方程，并加以修正毛片无码午夜国产视频，得到該方程的修正隱式攝動(dòng)差分格式免费的一级毛片。

In this paper, a high order accuracy difference method is presented for solving unsteady convection diffusion equation by using Implicit Perturbation Finite Difference scheme. Firstly, we use the steady convection diffusion equation, the constant coefficients of this equation are expanded to power series of grid-spacings, then the high-order Perturbation Finite Difference scheme is obtained by determining the coefficients of the power series. Put this scheme on unsteady convection diffusion equations and modified it, the IPFD scheme is constructed.

本文利用攝動(dòng)差分思想，對(duì)定常對(duì)流擴(kuò)散方程中的空間微商系數(shù)進(jìn)行攝動(dòng)展開(kāi)在线中文字幕日本，展開(kāi)冪級(jí)數(shù)系數(shù)通過(guò)消去攝動(dòng)格式修正微分方程的截?cái)嗾`差項(xiàng)求出717电影院理论片在线观看，由此獲得方程的隱式攝動(dòng)差分格式，將此方法應(yīng)用于非定常對(duì)流擴(kuò)散方程尤物在线观看视频，并加以修正国产精品永久免费啪啪啪，得到該方程的修正隱式攝動(dòng)差分格式。

Based on the given results of second order boundary value problem, the existence of solutions of nonlinear differential-difference equation and unique of solutions of Hammerstein type integro-differential-difference linear equation were established because Hammerstein linear equation featured only one solution.

以二階邊值問(wèn)題的已知結(jié)果為基礎(chǔ)影音先锋2020aⅴ色资源网，建立了微分差分非線(xiàn)性方程解的存在性国产精品自拍在线，以及Hammerstein型線(xiàn)性方程解的唯一性。

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.

本文由五章組成久久精品亚洲日本波多野结衣，主要內(nèi)容如下：第一章概述了微分方程及差分方程的應(yīng)用背景和國(guó)內(nèi)91在线播放、外研究狀況，這一章也包括一些預(yù)備知識(shí)日本色一区二区三区，如有關(guān)微分方程欧美黑人性做受、差分方程理論的基本概念和重要的不動(dòng)點(diǎn)定理欧美激情第欧美精品。

difference boundary value problem：差分邊值問(wèn)題

difference 差 | difference boundary value problem 差分邊值問(wèn)題 | difference differential equation 差分微分方程

difference differential equation：差分微分方程

dielectric strain 電介質(zhì)應(yīng)變 | difference differential equation 差分微分方程 | difference equation 差分方程

difference differential equation：微分差分方程,差微分方程=>差分微分方程式

difference voltmeter 差值電壓表 | difference-differential equation 微分差分方程,差微分方程=>差分微分方程式 | difference-differentialequation 差分微分方程

ordinary difference differential equation：常差分微分方程

ordinary carbon steel 普通碳鋼 | ordinary difference differential equation 常差分微分方程 | ordinary difference equation 常差分方程

differential difference equation：差分微分方程

differential curve 微分曲線(xiàn) | differential difference equation 差分微分方程 | differential equation 微分方程

differential difference equation：微分-差分方程

differential diagnosis 鑒別診斷 | differential-difference equation 微分-差分方程 | differential dilatometry 差示熱膨脹法

ordinary difference equation：常差分方程

ordinary difference differential equation 常差分微分方程 | ordinary difference equation 常差分方程 | ordinary differential equation 常微分方程

differential curve：微分曲線(xiàn)

differential cross section 微分截面 | differential curve 微分曲線(xiàn) | differential difference equation 差分微分方程

linear differential equation：線(xiàn)性微分方程=>線(xiàn)形微分方程式

linear difference equation 線(xiàn)性差分方程 | linear differential equation 線(xiàn)性微分方程=>線(xiàn)形微分方程式 | linear differential equation of high order 高階線(xiàn)性微分方程

symmetric ordinary differential operator：對(duì)稱(chēng)常微分算子

差分微分方程:Difference-differential equations | 對(duì)稱(chēng)常微分算子:symmetric ordinary differential operator | 微分方程系統(tǒng):the system of ordinary differential equation