请问BSMmodel d1，2这个公式考的几率有多大啊， 太难记了

答案解析中的公式，把inflows与outflows混在一起了(可以相加)，怎么理解？

1.如何理解portfolio diversification is fully accounted for using the VAR methodology. 因为VAR的计算公式里面有δ，而δ又和ρ有关? 所以这也可以说是fully? (考虑到整个组合各部分之间的ρ?) 2.如何理解 Delta-normal VAR is computationally simpler than portfolio standard deviation? 这是同一纬度的比较吗?(都是衡量风险的指标? 但VaR中包含了portfolio standard deviation了啊，而且Delta-normal VaR 还多了一个delta)

Most asset classes are liquid such that genuinely illiquid markets tend to be small and temporary. 这句话固然错误，但到底他们的大小关系如何？

B, C为什么错? 谢谢

如何理解第二点中的都是overpay, 为什么一个抬高溢价，一个降低溢价

It is June 2 and a fund manager with USD 10 million invested in government bonds is concerned that interest rates will be highly volatile over the next three months. The manager decides to use the September Treasury bond futures contract to hedge the value of the portfolio. The current futures price is USD 95.0625. Each contract is for the delivery of USD 100,000 face value of bonds. The duration of the manager’s bond portfolio in three months will be 7.8years. The cheapest-to-deliver bond in the Treasury bond futures contract is expected to have a duration of 8.4 years at maturity of the contract. At the maturity of the Treasury bond futures contract, the duration of the underlying benchmark Treasury bond is nine years. What position should the fund manager undertake to mitigate his interest rate risk exposure? A、Short 94 contracts B、Short 96 contracts C、Short 98 contracts D、Short 105 contracts 答案：C 老师，请问这题标的资产的久期为什么用7.8年，而不用9年呢？

假设一年365天，如果到期日前一天拿到了十块钱，相当于多持有10块钱一天，多拿了第365天的利息。是不是最后要扣除这天的利息？全价和净价说的是这个事吗

请问它俩的区别是? 谢谢老师!

请问应变量是什么？同因变量吗？