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Q3. The structure is under two concentrated forces, one distributed force, and one concentrated
moment as shown, Assume the support at B is a roller, and C is a fixed connected joint. Determine
(a) the reactions at supports A and B, (b) the maximum bending moment in the structure.

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Q1

a)

According to the graph, the opportunity cost incurred by the economy to increase its production of rice from 50 tons to 85 tons would be 25000-10000=15000 cars.

b)

According to the graph, only points on the production probability curve utilises its existing resources efficiently. They would be point B,C and D.

c)

Point a is above the production potential current, so using its current resources cannot achieve combination A unless more resources are borrowed.

d)

i)

Rainstorm will do harm to rice fields and increase the production cost of rice, which can also be understood as the reduction of resources for rice production. At the same time, the rainstorm may inundate the automobile factory, which will increase the production cost of automobiles, which can also be understood as the reduction of resources used to produce automobiles. Therefore, the PPC curve will move to the left and down as a whole.

ii)

If Japan relocates its car factories to higher ground, future floods will mainly affect rice fields, increasing the production cost of rice. It can also be understood as reducing the resources used to produce rice, but almost without affecting the production of cars. Therefore, the PPC curve moves to the left on the rice side, while the car side remains basically unchanged.

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线性代数,可能是许多大学生,甚至研究生们挥之不去的噩梦。究其原因,绝大多数都是被学校里堆积如山的公式定理、却无法触及问题本身,所耽误了。代写之家就要为大家提供靠谱,高质量的线性代数代写

线性代数代考是数学、计算机、电子学、通信控制等绝大多数工科专业的基础性学科。毫不夸张地说,如果线性代数学不好,那么可能你在这些更为深入的专业课上,可能也举步维艰。正因如此,国内高校基本上在大学阶段,就将其列为必修课之一。

可是这么多年过去了,学过线性代数的同学们,你能拍着胸脯、意气风发地告诉我:

我的线性代数不仅考了100分,而且我对线性代数完全融汇贯通了吗?

比如说,请你告诉我:行列式到底有什么用?

可能没有多少同学有这个底气。毕竟,考100分不难,难的是对知识的理解和深入。

为何线性代数如此之难?难道它真的只是教科书上那些堆积如山的公式吗?像下面这样我们的实战代考代写

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化学代考1-代写之家
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相信肯定有同学遇到过这个问题,在一切看起来都是那么顺利的情况下,临考的时候却被告知要加价才给代考。这种时候,客户就是他们待宰的”羔羊”,为了能通过考试大多数留学生只能憋屈接受,毕竟遇到这种无良机构在这种节骨眼上也束手无策,留学生也只能是哑巴吃黄连——有苦说不出。
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Quiz/Exam代考还有这样一种情况就是留学生找到了代考实力不够强硬的机构或者个人,这样的后果就是有代考不通过的风险,毕竟下到初中高中上到研究生各个阶段的网课难易程度不一,有些机构没有金刚钻还偏要揽瓷器活儿,最后给客户挂单了。挂单之后,理应全额退款甚至赔款给客户,但是有些机构就开始打迂回战了,客户要求退款却各种托词,消耗客户的耐心。
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  1. a) A jet of water coming out of a tap always breaks up into a series of drops. It has been
    observed experimentally that these drops vibrate. Use dimensional analysis to predict
    how the frequency of vibration of the water drops will depend on their density, radius
    and surface tension. f6g
    b) An ideal polarising filter is oriented such that incident horizontally polarised light
    is transmitted 100% and vertically polarised light is all absorbed. (These directions
    relate to the electric field).
    (i) When light of amplitude E0 = 200 Vm􀀀1 and linearly polarised at 45% to the
    vertical is incident, what polarisation and what amplitude is transmitted? f4g
    (ii) When circularly polarised light of the same amplitude is incident, what polarisation
    and what fraction of the incident amplitude is transmitted? f3g
    c) An outdoor sound system comprises two identical loudspeakers distance d = 5 m
    apart as sketched in the diagram below. As part of a test they are both fed the same
    pure note, of same amplitude A0 and phase, corresponding to a sound wavelength
    l = 0:6 m (and same frequency w).
    L
    y
    d

    P
    y = 0
    S1
    S2
    (i) The speakers S1 and S2 emit waves
    y1 = A0 cos (kx1􀀀wt) ;
    y2 = A0 cos (kx2􀀀wt) ;
    respectively, where k is the wavenumber and x1 and x2 are distances measured
    from S1 and S2. Show that the total wave at P is given by
    y (x; t) = 2A0 cos (kX 􀀀Wt)cos(kD) ;
    and define X;W and D. f4g
    (ii) Show that for y << L the sound amplitude at point, P, in the diagram is expected to be proportional to cos pdy lL f4g: (iii) An observer stands L = 20 m away, at y = 0. They move along the positive y-direction. At what value of y(> 0) will they first hear a maximum amplitude.
    f4g
物理代写-daixiezhijia.com
物理代写

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英国代考中的群论代写补考,客户所属学校应该是个中上等级的好学校,不然一般抽象代数代写讲不到表示论,但是题目还算友好,全都是单纯的计算而已。

在数学和抽象代数中,群论研究名为群的代数结构。群在抽象代数中具有基本的重要地位:许多代数结构,包括环、域和模等可以看作是在群的基础上添加新的运算和公理而形成的。群的概念在数学的许多分支都有出现,而且群论的研究方法也对抽象代数的其它分支有重要影响。群论的重要性还体现在物理学和化学的研究中,因为许多不同的物理结构,如晶体结构和氢原子结构可以用群论方法来进行建模。于是群论和相关的群表示论在物理学和化学中有大量的应用。

英国代写-代写之家
英国代写数学代写

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数据分析代写-代写之家

The objective of the coursework is to allow you a first hand appreciation of some of
the key issues in measuring risk. There are two parts, one involving analysis of a
portfolio having a single risk factor, the other involving analysis of a portfolio having
two risk factors.

  1. Select, and acquire historical data for, a traded financial asset. This might, for
    instance, be a commodity, a security, or a stock market index. Suppose that
    you had invested 1 million pounds in this asset at the date given by the earliest
    date in your data.
    (a) Explain your choice of sample size.
    (b) Using the data up to, but not including, 15th July 2021, calculate the simple
    daily returns for your asset [use simple returns throughout this coursework].
    Examine and describe the key statistical features of your sample of returns.
    (c) Calculate VaR and ES for 15th July 2021 using a one day holding period, and
    a confidence level of 90%, using the following methods:
    i. Basic Historical Simulation
    ii. Age-weighted Historical Simulation
    iii. Hull-White
    iv. Parametric, using the Normal distribution, without volatility adjustment
    v. Parametric, using the Normal distribution, with volatility adjustment
    vi. Parametric, using what you believe to be an appropriate distribution,
    without volatility adjustment
    vii. Parametric, using what you believe to be an appropriate distribution,
    with volatility adjustment
    You should present your results in a single table, and briefly provide a commentary
    on the similarities and differences.
    (d) Explain why it would be problematic to have used log returns to calculate
    VaR and ES for any of the parametric methods in the previous question.
  2. Acquire data for another asset and suppose that at at the start of the time series
    you invested 1 million pounds in this asset as well. You now have a portfolio
    which at the start of the data series was worth 2 million pounds. Suppose initially
    that your portfolio is not actively managed, so that your holdings of each asset
    remain unchanged.
    (a) Using the data up to, but not including, 15th July 2021, calculate the simple
    daily returns for each of the individual assets which constitute your portfolio.
    Examine and describe the key statistical features of your sample of returns.
    (b) Calculate VaR and ES for 15th July 2021 using a one day holding period, and
    a confidence level of 95%, using each of the following methods
    i. Basic Historical Simulation
    ii. Age-weighted Historical Simulation
    iii. Hull-White
    iv. Parametric, using the Normal distribution, without volatility adjustment
    v. Parametric, using the Normal distribution, with volatility adjustment
    vi. Parametric, using what you believe to be an appropriate distribution,
    without volatility adjustment
    vii. Parametric, using what you believe to be an appropriate distribution,
    with volatility adjustment
    (c) Explain how you might have been able to reduce your risk exposure for 15th
    July 2021 had you been able to adjust your portfolio on the 14th July 2021.
    Use the Basic Historical Simulation method for this part.
    The deadline for submission is as notified in the module outline. Please see Moodle
    for further discussion of useful approaches to this topic, and hints about R code.