公式中HPR= (F-P+CF)/P, 为什么答案中= （FV-(+)CF-P）/(P+(-)CF)??

这个老师讲的太急啦，好乱呀·····

为啥要加税后利息支出？

prepaid expense不是已经付出去的钱吗？为啥不计入给供应商的钱？inventory变少不是因为卖给消费者了吗？为啥计入给供应商的钱？

啥意思？

题干里的consider 。。。as financing activity，为啥要说这句话？

A bond is currently trading for $109.246 per $100 of par value. If the bond's yield to maturity falls by 25 bps, the bond's full price is expected to rise to $110.481. If the bond's yield to maturity rises by 25 bps, the bond's full price is expected to fall to $108.029. The bond's approximate convexity is closest to: 这道题我按了好几遍计算机，算出的答案都是24.2857，请问是保留小数点的原因吗，考试的时候遇到类似的情况是选最接近的那个答案？

比较风险大小这里，prefered stock前面确定没有少一个putable吗？应该是putable common stock 风险小于putable preferred stock吧？

什么是treasury stock，为啥是equity的备抵账户？

什么是non-controling interest？