1.证明以下各式 (1). AUB=(A B). (2)..-UB, =UN (A,,)

第八章微型计算机接口技术 8-1LED显示器接口 8-2键盘与单片机接口 8-3D/A转换器接口 8-4A/D转换器接口

2.3逆矩阵 定义:对于Ann,若有Bn满足AB=BA=E,则称A为可逆矩阵, 且B为A的逆矩阵,记作A-1=B. 定理1若A为可逆矩阵,则A的逆矩阵唯一 证设B与C都是A的逆矩阵,则有

Background information 1 Structure 2 Language points 3 After-class- activities

Chapter organization Introduction The Concept of Comparative Advantage A One-Factor Economy Trade in a One-Factor World Comparative Advantage with Many Goods Adding Transport Costs and Nontraded Goods Summary

2.1 Preface Performance of a program: the amount of computer memory and time needed to run a program We use two approaches to determine it: performance analysis performance measurement

I. Choose the Correct Answer . real engine has an efficiency of33%. The engine has work output of2 4J4 per cycle.how much heat energy is extracted from the high-temperature reservoir per cycle? (D) (A)8J

一、选择题(2分/题,共20分) (1)以下不能在工程资源管理器窗口中列出的文件类型是 A).bas B).res C).frm D)

More On The Nuer 1. Ghost Marriage: a woman is married to a dead man a. Among the Nuer, this kind of marriage is almost as frequent as marriage to a living man b. A living man is found to physically father a child for the dead man. TO understand this, one must distinguish between:

Background Information 1 Study and Learning Techniques 2 Share with Classmates your Learning Techniques 3 Common Learning Techniques of Top Students