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1.行列式的性质 性质1.设A=(a1)是n阶矩阵,A是A的转置矩阵,则 即行列式经过转置后其值不变. 性质2如果行列式的某一行(列)的元素都是两数之和, 例如行列式D的第i行的元素都是两数之和

Ⅰ、选择题(共10小题,每小题3分,共30分) 每题给出四个答案,其中只有一个是正确的,请将正确答案的标号(A或B或C或D) 写在题号前的横线上 1、积分∫es(-3)d等于 (A)0(B)1(C)e3OD)e3 2、下列等式不成立的是 (A)f0)6\(0)=f(0)6'(0 B)A06(0=f()5( (C)f)*6(0)=f(0 (D)f0)°(0)=f(0

二章习题课 例题一、如图所示的构件,B为中间铰,受载荷如图所示。 求:A、C处的约束反力。 q M A a a 〔思路 1、在解题前,先回顾一下固定端约束的情形。分别以旗杆、墙上钉的铁钉等,介绍其约 束情况(反力的个数) 2、需要求解的未知数为4个,只选取一次研究对象不能解决问题,需要补充方程。故可 以考虑先选取BC为研究对象,在以整体为对象,即可求解。 解)

Any periodic waveform f(t)f(t) can be expressed by a Fourier series provided that (1) If it is discontinuous, there are only a finite number of discontinuous in the period T (2)It has a finite average value over the period T (3)It has a finite number of positive and negative maximums in the period T

工程实践中有多种振动问题,如桥梁或建筑物的振 动,机械机件、飞机机翼的振动,及一些稳定性分析和 相关分析可转化为求矩阵特征值与特征向量的问题 1已知A=(an)mn,求代数方程q(1)=det(I-A)=0 的根。φ(λ)称为舶特征多项式,一般有n个零点,称 为的特征值 2设为伯的特征值,求相应的齐次方程(4/-A)x=0 的非零解(即求Ax=λx的非零解),x称为矩阵A对应 于孔的特征向量

4-1设有一个二维数组A[m][n]),假设A[0][0存放位置在644(1),A[2][2]存放位置在676(10),每个元素 占一个空间,问A[3][3](10)存放在什么位置?脚注(10)表示用10进制表示

化学反应速率与化学达到平衡的倾向的区别 We saw that a reaction with a very large equilibrium constant has a tendency toward the products so that very little of the reactants remain equilibrium is reached. Such a reaction is said to be spontaneous. However, as we have already pointed out, spontaneous doesn't mean fast

综合测验一 说明: (1)本测验分(A)卷和(B)卷。 (2)每队只能从(A)、(B)卷中任选一套试卷做。若选择(A)卷,只要从(A)卷题目中 任选一 题,按照所选题目的要求完成即可;若选择(B)卷只要从(B)卷题目中任选两题,按照 所选题目的要求完成即可

1) orally, conveniently carried, readily identified, and easily taken 2) compared with equivalent doses of a liquid medication, accurate dosing, most tasteless when swallowed 3) readily identified 4) Prescribing flexibility (a variety of dosage strengths) 5) from a pharmaceutic standpoint, solid dosage forms are • efficiently and productively manufactured • packaged and shipped by manufacturers at lower cost and with less breakage than comparable liquid forms • more stable, have a longer shelf-life than their liquid counterparts