第一种:2000[(1+5*6.5%)+(1+4*6.5%)+(1+3*6.5%)+(1+2*6.5%)+(1+6.5%)] =
2000[5+(5+4+3+2+1)*6.5%]=11950(元)
第二种:2000[(1+5.7%)^5+(1+5.7%)^4+(1+5.7%)^3+(1+5.7%)^2+(1+5.7%)]=
11845.642(元)
所以第一种好一点儿.
第一种:2000[(1+5*6.5%)+(1+4*6.5%)+(1+3*6.5%)+(1+2*6.5%)+(1+6.5%)] =
2000[5+(5+4+3+2+1)*6.5%]=11950(元)
第二种:2000[(1+5.7%)^5+(1+5.7%)^4+(1+5.7%)^3+(1+5.7%)^2+(1+5.7%)]=
11845.642(元)
所以第一种好一点儿.