Plan for the session Q Questions Complete some random topics Lecture on design of dynamic systems (Signal/Response Systems Recitation on hw#5? 16.881

d d2+p(x)+Q(x)y=f(x)二阶线性微分方程 当f(x)=0时,二阶线性齐次微分方程 当f(x)≠0时,二阶线性非齐次微分方程

编程题答案 case'q:[16]++;break; case'r: PP[17]++;break; int i; 第1题答案 case's: pp[18]++;break; float s=1.0, =1.0; int fun(int score[],int m, int below[) case't: pp[ 19]++; break;

第十五章电路方程的矩阵形式 本章教学重点 (1)图的矩阵表示 关联矩阵A单连支回路矩阵B单树支割集矩阵Q (2)矩阵形式的KCL、KVL (3)结点电压方程的建立

第4节理想气体绝热过程 绝热过程:d=0,Q=0 一、准静态绝热过程

Uint I. Basic listening Practice 1. Script M: Third World countries must improve their economies if they want to raise their W: But how can they do that when developed countries control world trade? Q: Which of the following is true?

Flying there is not half the fun I. Basic listening Practice I Script M: would you prefer a window or an aisle seat, madam? W: Aisle, please. If there's none left, then a wind. w seat is Ok. But I don't like middle seats。 Q: what is the order of the womans preference? C: aisle-wingdow-minddle

Basic listening Practice 1. Script W: Let me recommend my brother to you. He's really done well in the stock market over the last M: The real question is this: How have you dine by taking his advice Q: What does the man mean?

Ⅱ. Listening skills Understanding Times and dates w: Oh, look at the clock It's 5: 15. I'll be late for Jennifer's birthday party! I was supposed to leave at 5 o'clock M: Don't worry! You still have some time. The clock is twenty minutes fast Q What time is it now?

Ⅱ. Listening skills Identifying prices M: I want two correction pens and a notebook. How much are they? W: $1.95 for each correction pen. $5.00 for the notebook Q: How much does the man have to pay? 2. W: Ooh, it's only $9.8. I bet Jane would love this blue vase. Flowers are really her thing