The Marshall–Lerner condition indicates a stable foreign<br/>exchange market if the sum of the price elasticities of the demand<br/>for imports and the demand for exports0, in absolute terms, is less<br/>than 1. ()

如果一国的实际汇率变动并不是从经常项目余额为零这一情况开始的，那么该国的 马歇尔 - 勒纳条件将会是怎样的? ( 本章附录 2 中的马歇尔[tex=0.786x1.071]/gLLq/wYBSa6RRi+X/lxMw==[/tex] 菓纳条件是在经常项目初始平 衡这一"标准"假设下导出的。)What does the Marshall - Lerner condition look like if the country whose real exchange rate changes does not start out with a current account of zero? (The Marshall - Lerner condition is derived in Appendix 2 under the "standard" assumption of an initially balanced current account. )

lerner教授提出

If the elasticity equals -10，the Lerner Index equals 0。01（ ）

Marshall和Warren的贡献就是发现了

The Lerner Index indicates that a monopolist has unlimited control over price。（ ）

The student is quoting from page 79 of the following source: Marshall, Eliot. Legalization: A Debate. New York: Chelsea, 1988. There are two works by Marshall in the list of works cited. Which of the following is correct?

The Lerner Index is difficult to estimate because data are lacking on firms’ marginal costs。（ ）

完全竞争的市场中，企业的Lerner指数趋近于0。

完全竞争的市场中，企业的Lerner指数趋近于无穷大。