为什么不是c的算法，分母为什么不用YTM-g

根据本页PPT讲解的representativeness bias知识点，我的提问是：书P195-Example 4-Exhibit 16的哪些数据，可以得出答案中的这个结论 though they are substantially higher than the past five years of profitability for Rémy itself. 截图中另一句标黄的结论，是通过表格中的哪些数据得出的结论？Remy management’s objective of 33 percent operating margin in 2030 appears high relative to those of its peers; only one company, Brown Forman, has achieved that level of profitability, on annual revenues ~3.0× that of Remy.

根据本页PPT讲解的representatiness bias知识点，我的提问是：书P195-Example 4-Exhibit 16的哪些数据，可以得出答案中的这个结论 though they are substantially higher than the past five years of profitability for Rémy itself. 截图中另一句标黄的结论，是通过表格中的哪些数据得出的结论？Remy management’s objective of 33 percent operating margin in 2030 appears high relative to those of its peers; only one company, Brown Forman, has achieved that level of profitability, on annual revenues ~3.0× that of Remy.

Periodic payment用計算機第3排5個鍵就可以算出，背這個公式是必要嗎？還是有些題目不能用計算機第三排算出？

这是什么知识点，老师能说一下需要掌握什么吗

老师解释一下这三个选项呗，没懂

根据本页PPT的illusion of control知识点的讲解，我的提问是：书P192-Example 2-这道例题，没看明白，第一段写着does not disclose segment revenue by geographic region, nor does it disclose revenue by sales channel，即：不按地理区域披露分部收入，也不按销售渠道披露分部收入。但是当中一段又说build a revenue model in which each segment is broken out into geographic regions and sales channels? 怎么又需要把分部拆分为geographic region和sales channel了？

可以用当前价格，是不是指justified

根据PPT的讲解，我的提问是：书P191-Example 1, 为什么这种强劲增长，是由 a high level of reinvestment in sales and marketing costs and aged cognac inventory所支持的？再投资水平很高，怎么看出来的？营销成本的再投资水平很高，什么意思？还有aged cognac inventory陈年干邑库存，又是怎么看出来的？

信用增级和抵押债券之间是什么关系?发行放如果信用足够,应该是可以发行无抵押债券的对吧?如果信用不够可以发行抵押债券,或者做信用增级对吗? 那么超额抵押属于信用增级的一种,那么抵押也算是信用增级的方式吗? 另外,是不是只有 ABS 才有信用增级一说?还是针对所有债券