问题是你让他们怎么算IRR？如果不懂公式，或者没有一个financial calculator?何况对出租房这种

来源: 于 2012-03-23 20:03:19 [旧帖] [给我悄悄话] 本文已被阅读：次

sometimes has both possitive and negative cashflow projects? IRR的公式，对一般人来说，这个r不是那么容易解出来的

Example

If an investment may be given by the sequence of cash flows

Year (n)Cash flow (C_n)
0 -4000
1 1200
2 1410
3 1875
4 1050


then the IRR r is given by

\mathrm{NPV} = -4000+\frac{1200}{(1+r)^1} + \frac{1410}{(1+r)^2} + \frac{1875}{(1+r)^3} + \frac{1050}{(1+r)^4} = 0.