题目内容

Q=Q(P)=75-P²
(1)求P=4时的边际需求，并说明其经济意义；
(2)求P=4时的需求弹性，并说明其经济意义；
(3)当P=4时，若价格P上涨1%，总收益将变化百分之几？是增加还是减少？
(4)当P=6时，若价格P上涨1%，总收益将变化百分之几？是增加还是减少？
(5)P为多少时，总收益最大？

查看答案

搜索结果不匹配？点我反馈

更多问题

A 宗气充盛
B 宗气外泄
C 心阳亢盛
D 小儿惊风或疹痘初起

Programming is a(1)that has various engineering and(2)aspects. Although most of aspects are interrelated, each of them covers a number of(3)and goals. which are very specific. The progress being made in teaching(4)is reflected by the fact that most(5)science curricula contain a broad spectrum of programming courses, each emphasizing a different aspect of programming.
侠选择的答案：
(1) notation (2) physical (3) function (4) discipline (5) philosophy
(6) software engineering (7) charactenstics (8) mathematical (9) progranun/ng
(10) program (11) method (12) computer

298K、100kPa时，已知：（1）C（s，石墨）+O2（g）═CO2（g）△H=-393.5kJ？mol-1（2）2H2（g）+O2（g）═2H2O（l）△H=-571.6kJ？mol-1（3）2C2H2（g）+5O2（g）═4CO2（g）+2H2O（l）△H=-2599kJ？mol-1根据盖斯定律，写出298K时由C（s，石墨）和H2（g）生成C2H2（g）的热化学方程式

(1)() A statement in a document that another document is the sole original.
(2)() If the document
1) appears to be written, typed, perforated, or stamped by the document issuer hand, or
2) appears to be on the document issuer original stationery, or
3) appears to be hand-signed by the document issuer, or
4) appears to bear the document issuer facsimile signature, or
5) appears to be a photocopy of another document if such photocopy appears to have been completed by the document issuer hand marking.
6) If a document states that it is original or marks/stamps the word "original".