Let X(n) be the distance between the ant and the other end after the nth day,then we have X(n+1) = (1+1/n)(X(n)-0.01) Looks like the ant will never arrive at the other end. Are you sure the rope grows by 1 meter not 1 centi-meter at night? |
just answer whether it is theoreticle possible or not? |
第N天绳长N米,蚂蚁爬绳长的1/(100N)。前N天蚂蚁爬绳长的(1+1/2+1/3+。。。+1/N)/100。所以蚂蚁用 e^(100-c) 天可以爬到头。。。不行,蚂蚁早就死了。 |
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