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Typical APR (annual percentage rate) problem. The answer is 35.07%. You need read an elementary investment book.
geometric form is 34.57%
use computer solve the following eq
1000=100(sum(i=1:12 ; exp(-r*i/12))
35.07%是对的,我从工具算出来的是35.07但是自己编写的程序却算不出来这个数啊
irvingy,帮我看看
搞清楚了,呵呵定义搞错了我。
periodic rate is .29228540769133694526147795458104e-1