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

来源: jinjing 于 2011-01-31 18:21:24 [] [旧帖] [给我悄悄话] 阅读数 : (133 bytes)

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)

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