老师，t0时间PUT组合的价值为什么和t1时间点一样，股票的价格没有变化吗

货币贬值率怎么计算？货币贬值率和CPI之间存在数量关系吗？

An analyst found a reversal of $800,000 of a previous write-down of the inventories in a manufacturing company, resulting the inventory's carrying value increased to $4,000,000. Which of the following statement regarding with the inventory is most likely correct? A The company will provide explanations for this reversal in its footnotes. B The company will record a gain of $800,000 on the income statement. C The inventory has a net realizable value of $4,000,000. A IFRS required disclosures related to inventories, including the amount and explanations of any reversal of previous write-downs. The reversal will not be recorded as a gain but a reduction in COGS. $4,000,000 can be the net realizable value or the original cost of the inventory, since we are only allowed to write up to the extent of the inventory's historical cost. 请问：截图中B C选项的公式在哪里可以找到？小视频中B C 选项的推导没有太理解，可否能用公式解释一下？

The inventory turnover ratio and the number of days in inventory are least likely used to evaluate the: A effectiveness of a firm's inventory management. B stability of a firm's inventory levels. C age of a firm's inventory. b Neither metric is directly relevant in evaluating the stability of a firm's inventory levels. Determining stability would presumably require other information such as purchase and sales levels, for example. The inventory turnover ratio and the number of days in inventory can be used to evaluate the relative age of a firm's inventory as well as the effectiveness of a firm's inventory management. 问题： 1.A选项是不是efficient更准确些？ 2"Determining stability would presumably require other information such as purchase and sales levels"这里说的存货的稳定性和购买和销售力的关系没有搞太明白，可否再解释一下

橘黄色部分怎么推导的还是要背？ 尤其marshal lerner condition中为什么import减一?

我理解题目虽然给的是所谓90天的无风险利率其实就是1-year的无风险利率是吗？我本来其实想乘四边年化，但是看答案反而要去掉年化变成区间利率所以如果碰到类似题目都默认给的是一年的risk free rate吗？ 谢谢

金程ppt第2/5例题 我理解其实第二个小问题不需要去用贴水率 直接跟我截图黄色便条这样计算可以吗？

这里的long exposure of risk怎么理解呢？

我想问一下关于fx 市场分类 buyside中的real moeny和leveraged是不是都算investment accounts 然后 swfs和central banks难道不应该算在government entities里面 为什么金程分开列举了呢还是说kaplan的notes有问题？新教材改过了?

老师您好，这是咱们习题集里的一道题，这里我有不理解问题如下: 1：the real rate of return for equities 的计算为什么是（1+8%）/(1+2.1%)-1 还有就是the risk premium for equities的计算怎么算