Matlab符号计算及其在大学物理中的应用

简要介绍了Matlab6.5版本符号计算功能,通过具体实例说明符号计算在大学物理学中的应用.将Matlab符号计算引入大学物理教学为大学物理计算机辅助教学提出了一个较好的解决方法.     

利用Mathematica提高学生对函数的认知境界

Mathematica是美国Wolfram Resarch公司开发的数学软件,可以用来解决各种领域中涉及的复杂的符号计算和数值计算的问题.Mathematica的主要用途是科学研究与工程技术中的计算,由于它的功     

Mathematica 4.0 功能初探

Mathematica 4.0,它拥有范围广泛的数学计算功能,支持比较复杂的符号计算和数值计算,能进行复杂的数学公式推导和理论分析,具有图形可视化的功能.     

圆柱坐标系和球坐标系的Christoffel符号计算

系统地给出了曲线坐标系中的基矢及基矢的空间变化率,应用Christoffel符号的定义分析了圆柱坐标系和球坐标系的Christoffel符号计算.比较了完整坐标系下和非完整坐标系下Christoffel符号计算公式.     

Mathematica软件在物理极值问题上的应用

一、前言 Mathematica系统是由美国伊利诺大学复杂系统中心主任,物理学、数学和计算机科学教授stephen Wolfram研制的数学分析型软件,以符号计算见长,也具有高精度的数值计算功能和强大的图形功能.     

《高等数学》教学中应用MATLAB的探讨

针对传统《高等数学》教学模式单调、教学枯燥等缺点,利用MATLAB强大的数值计算、符号计算、图形可视化三大基本功能辅助高等数学教学,大大提高了教学效率,激发了学生的学习热情,取得很好的教学效果.本文探讨了MATLAB在《高等数学》教学中最常见的几种应用.     

Mathematica4.0功能初探

Mathematica4.0它拥有范围广泛的数学计算功能，支持比较复杂的符号计算和数值计算，能进行复杂的数学公式推导和理论分析，具有图形可视化的功能。     

浅谈Mathematica软件在数学教学中的应用

Mathematica软件具有强大的数值计算、符号计算、绘图、程序设计等功能,数学教学中引入Mathematica软件作为教学的辅助工具,可解决学生数学运算问题,函数的图形绘制问题等,还可以应用于数学实验教学,提高学生的数学分析能力和解决综合应用问题的能力.     

基于Maple系统的Riccati方程的自动求解

利用非线性演化方程精确行波解的手工推导和计算的原理,结合计算机符号计算,在计算机代数系统Maple上,开发基于非线性代数方程组吴文俊消元法的非线性演化方程精确行波解的自动求解软件包,实现了非线性方程(组)的求解过程的完全自动化.     

Mathematica在定积分中的应用

在定积分的教学中引入Mathematica软件,利用其强大的数值计算、符号计算、动画以及图形功能,通过实例使定积分的学习变得容易,更能激发学生学习数学的兴趣。     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

Western and Eastern culture differences in commercial field

The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity.     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

风的曲线

Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose.     

团图为数的图中的闭团贯数

Given a graph G,a subgraph C is called a clique of G if C is a complete subgraph of G maximal under inclusion and |C|≥2. A clique-transversal set S of G is a set of vertices of G such that S meets all cliques of G. The clique-transversal number, denoted as TC (G), is the minimum cardinality of a clique-transversal set in G. The clique-graph of G, denoted as K (G), is the graph obtained by taking the cliques of G as vertices, and two vertices are adjacent if and only if the corresponding cliques in G have nonempty intersection. Let F be a class of graphs G such that F={G|K(G) is a tree}. In this paper the graphs in F having independent clique-transversal sets are shown and thus TC (G)/|G|≤1/2 for all G ∈ F.     

Sister Carrie, an Adherent of Desires

Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.