Consumption over the Life Cycle You are currently 35 years old, expect to retire in 30 years at age 65, and then to live for 15 more years until age 80 u You current income is $30,000 per year, and you real labor income adjusted for inflation remains at $30,000 per year until age 65 u The real rate of interest is 3% per year u Assume you plan to consume a constant stream of the same amount in each of the next 45 years, denoted by

Logit模型和 Probit模型 U, =V;+;(7.3.1)假定有2种可选方式。个人n选择方式1是因为方式1的效用U大于方式2的效用U2,即

一、逆幂法分析 设n阶实方阵A有n个线性无关的特征向量u12…n 相应的特征值分别为,2…n,并按其绝对值的大小排列 即 则由A1=u,可得Au1=u,即A的逆矩阵A的特征值为

为了对论域U={1,2…,n}中的元素进行 排序,由m个专家组成专家小组M,分别对U中的元 素排序,得到m种意见: ={, \2, ..} 其中v是第i种意见序列,即U中的元素的某一个 排序

1.确定下列函数的自然定义域: (1)u=ln(y-x)+1-x2-y2 (2)u=++ (3)u=R2-x2-y2-z2+x2+y2+z2-r2(>r);

第一题: 1.y(t)=u(t-t) 使用拉式变换的定义: Y(s)=\u(t-r) 令T=t-T, Y(s)=Se-ru()= u()dt=(s) 所以,G(s)=ex

一、基本概念 1、数项级数及其收敛与发散概念给定数列{un},即u1,u2,u3,…n

Prior to 767 somewhat arbitrary break at 100 seats DC-9 (2 person crew-pilot, co-pilot u B-727 3 person crew-pilot, co-pilot, flight engineer) B-757/767 Designed for 2 person Crew u Use of automation and simplified systems so minimize systems management u Use of advanced Cockpit to Increase Sa and make primary flight tasks

一、选择题(共10题20分) 1.2分(4182)4182p3和298K下,把Pb和Cu(Ac)2溶液发生的反应安排为电池,当获得可逆电功为91.84kJ时,电池同时吸热213.6kJ,因此该过程有:() ()△>0,△S>0 (B)△U0 (C)u>,<0 (D)△U<0,△S<0

4.2热膨胀 4.2.1非简谐振动 1.简谐近似 简谐近似:当原子离开其平衡位置发生位移时,它受 到的相邻原子作用力与该原子的位移成正比。 设在平衡位置时,两个原子间的互作用势能是:U(a); 产生相对位移δ后,两个原子间的互作用势能是:U(a+δ ) 将U(a+δ)在平衡位置附近用泰勒级数展开如下: