老师，想问下这个题bc

11 A basket of listed depository receipts, or an exchange-traded fund, would most likely be used for:A gaining exposure to a single equity.B hedging exposure to a single equity.C gaining exposure to multiple equities.老师，这一题为什么选C（gaining exposure to multiple equities)？原版书有句话是ETFs can also be purchased on margin and used in hedging or arbitrage strategies.

twice more than 是多出两倍 1比3 more than twice 不是多出两倍多嘛 不应该是 1比 >3嘛 为啥里面是100比210

一阶导的公示是怎么推的？

spot rate就是spot exchange rate 吗，不是即期利率的意思吗

请问这个alpha是组合相对于无风险收益rf的超额回报，还是相对于市场回报率rm的超额回报？

请问这个阿尔法是什么？

请问这两道题

请问这三道

请问Asset的减值回转是可以超过他原来的价值么？