解析的最后purchase算式中少了△A.P 最后结果变小答案不变，但是还是解析说错了吧？

repair如何界定资本和费用呢

After an equal weighted index is constructed and the prices of constituent securities change, the index is no longer equally weighted. Therefore, maintaining equal weights requires frequent adjustments (rebalancing) to the index. Price-weighted indices are not rebalanced because the weight of each constituent security is determined by its price. For market-capitalization-weighted indices, rebalancing is less of a concern because the indices largely rebalance themselves.

老师好，图一中的A选项At the end of the lease, the asset is returned to the lessor.错误是因为finance lease的title transfer无偿所有权转移。但是图二的答案解释中又说到finance lease的承租人不拥有该项资产。为什么呢

The price return of the price-weighted index is the percentage change in price of the index: (68 - 75)/75 = -9.33%.

能把题目讲细致一点吗？

老师，请解释一下第2题，谢谢

怎么开4次根呢？ 我算出来是2。8%

怎么开4次根呢？

听不懂解析，能不能用画表格的方式给我解析一次？