一、填空题 1.四阶行列式中带有负号且包含a12和a21的项为

在模型 y, =a+Bx, +ut=1, 2,. n 中,认为参数a、β在样本期内是常数,即认 为产生样本观测值的经济结构保持不变,解释 变量对被解释的影响保持不变

Number theory is regarded as a beautiful but largely useless in the past a Today number-theoretic algorithms are used videly

Handout 2: Gain and Phase margins Eric Feron Feb6,2004 Nyquist plots and Cauchy's principle Let H(s) be a transfer function. eg H(s)= s2+s+1 (s+1)(s+3) Evaluate H on a contour in the s-plane. (your plots here)

定积分的几何应用 一、平面图形的面积 1直角坐标系 作为一般情况讨论,设平面图形由[a,b] 上连续的两条曲线y=f(x)与y=g(x) (f(x)≥g(x)及两条直线x=ax=b所围成 在[a,b上任取典型小区间[xx+dx 与它相对应的小曲边梯形的面积为局部量dA

Jordan标准形( Cont i nue) 化方阵A为 Jordan标准形特征向量法设A∈C

n个列向量是一个标准正交基AA=1A=A-1 酉相似下的标准形 Schur定理:任一复数方阵均可酉相似于上三角矩阵

第9章并行接口 本章主要教学内容 一、并行输入输出接口技术的概念和功能 二、8255A的内部结构及引脚 三、8255A的工作方式及其应用

Across 1. A metal used in batteries but not pencils 2. This element is found in the most odorous compounds 3. Its aqueous 2+ ion has a characteristic blue color 4. Bananas are rich in its cation 5. The noble gas with the second-lowest densi 6. Its hydride is the most common basic gas

II. 19. This rule can be used for all integers, both positive and negative. 27. Impedance in an ac circuit plays the same role that resistance does in a dc circuit. 28. Two parallel wires a distance of apart carry the current i