3.2.5行列式的按任意列展开和特殊矩阵的行列式 1、行列式的按任意行(列)展开 定义命A=(-1)M,称为a的代数余子式

当积分区间[a,b]的长度较大,而节点个数n+1固定时 直接使用 Newton-Cotes-公式的余项将会较大 而如果增加节点个数,即n+1增加时 公式的舍入误差又很难得到控制 为了提高公式的精度,又使算法简单易行往往使用复合方法 即将积分区间[a,b]分成若干个子区间 然后在每个小区间上使用低阶 Newton-Cotes-公式 最后将每个小区间上的积分的近似值相加

1. 从 2 到 11 的十个整数中任意地选一个，设：A={所选的数为奇数}，B={所 选的数为质数}，C={所选的数为 3 的倍数}． （1）写出事件 AB，并求其概率； （2）写出事件 A-B，并求其概率．

2.1.1向量和m维向量空间的定义及性质 定义(向量)设K是一个数域。K中m个数a1a2,m所组成的一个m元有序数组称为一个m维向量

CONSTRUCTION OF VERTICAL SECTION 1 Select the location of the section and draw a section line (usually perpendicular to the strike of the main structures), right-hand end is its more easterly end 2 Draw a topographic profile along the line of section. Determine the base line on the squared

1、已知某D/A转换器的最小电压为5mV最大满刻度电压为10V求该DA转换器数字量的位数 2、已知某D/A转换器输入10位二进制数最大满刻度电压为5V求最小分辨电压和分辨率

Class expectations This is a graduate level class. There is no final exam Grading in the class is based on homework (75%) and on a final written report(25%) The report will be revised during semester and should be 2000-3000 words(8-10 double spaced pages)

This unit is intended to help us get a broader perspect Brain drain” After I hould be able to 1) Understand how the author looks at \Brain Drain 2) And how to cope with this challenging problem 3) Understand the writing method of making contrast in an argumentative essay king contrast

Teaching Objectives: This unit help us learn what you can do to protect yourself, your family, your friends and neighbors. Every person can make a difference. After learning it, students should be able to: 1)learn about AIDS and know how to protect ourselves

1图示№20a工字钢,在温度20℃时安装,这时杆不受力,试问:当温度升高多少度时,工 字钢将丧失稳定?钢的线膨胀系数a=12.5×10-61/℃ 解题分析:计算时,取i的最小值。此题是 一度静不定问题,利用变形协调方程求解