这节课说discount rate 和收益率不一样.但之前的题目全部都是把discount rate当成收益率,是怎么回事?

听不懂听不懂听不懂，理不清解题思路

这一题不选b选项 是因为loss直接进NI 而没有先去递减之前的gain吗？

Which of the following statements regarding the option adjusted spread (OAS) is most accurate? The option adjusted spread: A is the spread added to the Treasury spot rate curve that the bond would have if it were option-free. B is the spread that accounts for non-option characteristics like credit risk, liquidity risk, and interest rate risk. C for a putable bond is the Z-spread plus the cost of the option putable coast=ZS-option cost 还是ZS option cost? callable cosat = 什么？

老师，我想问下这道题的题意和解析部分，看了视频也没看懂。

老师您好，我一直不太明白汇率对于通胀的影响，还有就是汇率影响进出口的机制是什么，本币和外币的升降值对通胀的影响是站在本币还是外币的角度来说的

老师您好，请问视频中讲样本方差的分母是n-1时讲到自由度举例说四个数1，2，3，x, 均值2.5，x=4,不理解怎么看出自由度是3的？

权证可以同时持有股票和期权，那股票和期权是否是等值的呢？？

税率改变不需要retrospective调整吗

老师，这里的SFAS和US.GAAP是不是都是表示美国会计准则？下面的IAS和IFRS都是国际会计准则的意思？