### 英国补考|电动力学代写electromagnetism代考|PHYS3040

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• Statistical Inference 统计推断
• Statistical Computing 统计计算
• (Generalized) Linear Models 广义线性模型
• Statistical Machine Learning 统计机器学习
• Longitudinal Data Analysis 纵向数据分析
• Foundations of Data Science 数据科学基础

## 英国补考|电动力学代写electromagnetism代考|General definition of waves

The general definition of waves must meet certain conditions:
The existence of a division of the overall sphere into two sub-spheres: the internal sphere or the spatial sphere (these are flat interfaces or localized elements, indeed centers of boundary conditions within integrated methods). The second sphere is the external sphere (or spectral sphere). This sphere is most often described on the basis of the unique functions of the Helmholtz operator, which stems from Maxwell’s equations. To develop this method, we need to define two dual variables such as Current-Voltage, Electric field-Magnetic field, Current density (density or surface)-Electric field, and Voltage-Load density or Voltage-Load. All of the possibilities are shown in Table 1.1. $E$ and $J$ may be taken as two dual variables. $J$ is not necessarily a current-related density, but encompasses all magnitudes which are defined in Table 1.1. $J$ may also be related to current volume density. One would thus write it as Jv to avoid confusion with the magnetic field rotated by $90^{\circ}\left(H^{\wedge} n\right)$. Wave amplitudes $A$ and $B$ are thus defined (it may be observed that $A$ and $B$ may be scalars or vectors):
\begin{aligned} &\vec{A}=\frac{1}{2 \sqrt{Z_{0}}}\left(\vec{E}+Z_{0} \vec{J}\right) \ &\vec{B}=\frac{1}{2 \sqrt{Z_{0}}}\left(\vec{E}-Z_{0} \vec{J}\right) \end{aligned}

## 英国补考|电动力学代写electromagnetism代考|Circuits with localized components

The traditional iterative wave method involves breaking down an electromagnetic problem into two parts $[\mathrm{BOZ} 09]$ as follows. The propagation equation aspect within a vacuum is dealt with in its entirety, and therefore translates as a relationship with the boundaries across sphere $D$, then with the boundary conditions running across sphere $D$. It is then necessary to have dual magnitudes linked together in a vacuum and at the boundaries, by linear operators, through a proportionality relationship (which is internal to $D$ ) and an integral relationship (which is external to $D$ ).
Figure $1.3$ shows the unidimensional structure which is made up of several cells, each enclosed by periodic walls. This structure is periodic, except at source level.
$$E_{2}=E_{1} e^{j \alpha} ; E_{3}=E_{2} e^{j \alpha} ; E_{4}=E_{3} e^{j \alpha} ; E_{5}=E_{4} e^{j \alpha}$$

## 英国补考|电动力学代写electromagnetism代考|General definition of waves

$$\vec{A}=\frac{1}{2 \sqrt{Z_{0}}}\left(\vec{E}+Z_{0} \vec{J}\right) \quad \vec{B}=\frac{1}{2 \sqrt{Z_{0}}}\left(\vec{E}-Z_{0} \vec{J}\right)$$

## 英国补考|电动力学代写electromagnetism代考|Circuits with localized components

$$E_{2}=E_{1} e^{j \alpha} ; E_{3}=E_{2} e^{j \alpha} ; E_{4}=E_{3} e^{j \alpha} ; E_{5}=E_{4} e^{j \alpha}$$

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## MATLAB代写

MATLAB 是一种用于技术计算的高性能语言。它将计算、可视化和编程集成在一个易于使用的环境中，其中问题和解决方案以熟悉的数学符号表示。典型用途包括：数学和计算算法开发建模、仿真和原型制作数据分析、探索和可视化科学和工程图形应用程序开发，包括图形用户界面构建MATLAB 是一个交互式系统，其基本数据元素是一个不需要维度的数组。这使您可以解决许多技术计算问题，尤其是那些具有矩阵和向量公式的问题，而只需用 C 或 Fortran 等标量非交互式语言编写程序所需的时间的一小部分。MATLAB 名称代表矩阵实验室。MATLAB 最初的编写目的是提供对由 LINPACK 和 EISPACK 项目开发的矩阵软件的轻松访问，这两个项目共同代表了矩阵计算软件的最新技术。MATLAB 经过多年的发展，得到了许多用户的投入。在大学环境中，它是数学、工程和科学入门和高级课程的标准教学工具。在工业领域，MATLAB 是高效研究、开发和分析的首选工具。MATLAB 具有一系列称为工具箱的特定于应用程序的解决方案。对于大多数 MATLAB 用户来说非常重要，工具箱允许您学习应用专业技术。工具箱是 MATLAB 函数（M 文件）的综合集合，可扩展 MATLAB 环境以解决特定类别的问题。可用工具箱的领域包括信号处理、控制系统、神经网络、模糊逻辑、小波、仿真等。