You great.As time is continouse ,I give the Prob. for any time

来源: 于 2011-01-31 18:21:24 [旧帖] [给我悄悄话] 本文已被阅读：次

Using discrete time,the error can't be avoided.

Let p(x)=-(1/60)ln(.1)[(.1)^(x/60)]

P(x)=Int(p(x))from(0 to x)