一.填空题(本题共5小题,每小题3分,满分15分) (1)设常数a≠,则 Inn-2na+1=1-2a nn(1-2a) (2)交换积分序:f,y)axy)x=ay)dy 12-2)

Crofton's Method Let X1 and X2 be independent random variables that are uniformly distributed over the interval [o, a]. We are interested in computing E[ -X2l]. For instance, in an urban setting, X1 and X2 may denote the location of an accident and the location where an emergency vehicle is currently parked in a road segment of length a, respectively In this case, we want to know the distance

(ⅡI)形如 =fax+b+c a,x+b,+c 的方程, 其中a,a,b2,,2均为实常数

2001年6月全国大学英语四级考试真题和答案 Part I Listening Comprehension(20 minutes) Section a Directions: In this section, you will hear 10 short conversations. At the end of each conversation, a question will be asked about what was said. Both the conversation and the question will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices

化方阵A为Jordan标准形 特征向量法 1.在A的 Jordan矩阵中构 初等变换法

Logistics We(provisionally) meet on Tuesdays and Thursdays 10: 40a-12: 10p, in Bendheim 317. I will create a mailing list for the course. Therefore please send me email at your earliest convenience so I can add you to the list. You do not want to miss important announcements, do you? the course has a web page at http://www.princeton.edw

2001年1月全国大学英语四级考试真题和答案 Part I Listening Comprehension(20 minutes) Section a Directions: In this section, you will hear 10 short conversations. At the end of each conversation, a question will be asked about what was said. Both the conversation and the question will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices

In specifying refrigeration equipment the function of the equipment must be absolutely clear. Refrigeration equipment is always used to control tem- perature. Either the meat passing through the process is to be maintained it its initial temperature, for example as in a refrigerated store or a packing operation, or the temperature of the meat is to be reduced, for example in a blast freezer. These two functions

一.(本题共40分)给定有理数域上的多项式f(x)=x4+3x2+3 1.(本题5分)证明f(x)为中的不可约多项式 2.(本题5分)设a是f(x)在复数域C内的一个根.定义 Qa]= {ao +aa+a2a2}

1. Offer and quotation: (1)A quotation is often taken by many Chinese business person to stand for a unit price with delivery conditions. e.g. USD324/PC CIF New York; An offer is considered to include more conditions such as shipment, payment, insurance and packing. (2)From the legal point of view a quotation is not an