bearbee

上午的是比较简单，下午的概念难度加深了很多，问题里有很多是引导性和双重肯定/否定的，不认真看会漏掉，答案里也有很多模糊的，有些有细看分析。总的说就是要了解基本概念，基本上都考了，连after-taxed cash flow都有，我是考完中午才看了看，运气有点好。good luck

bearbee

上午的是比较简单，下午的概念难度加深了很多，问题里有很多是引导性和双重肯定/否定的，不认真看会漏掉，答案里也有很多模糊的，有些有细看分析。总的说就是要了解基本概念，基本上都考了，连after-taxed cash flow都有，我是考完中午才看了看，运气有点好。good luck

bearbee

monopolistic competition---price searcher, yes

perfect competition---price taker, no

bearbee

what is the lower bound for american put before expiration-----should be intrinsic value max(0,X-S)

bearbee

QUOTE:

以下是引用ray168168在2008-6-11 2:11:00的发言：

mmm... for monopolistic competition

short run - possible economic profits

long run - new firms enter -> zero economic profits

so it depends whether it was asking abt the long run or the short run

i remember that i picked "no" to both ie. it could be asking abt the long run impact

does anyone remember?

it asks if  the companies have "any" power, no matter it's short/long run, in monopolistic market, there are price-searchers with differential products, the companies got to find the right prices for their products.therefore, they have power to determine their products' prices.

bearbee

国外的论坛?可以留个网址吗？我想去看看，谢谢