假设有两种微生物 X 和 Y



X出生后每隔3分钟分裂一次（数目加倍），Y出生后每隔2分钟分裂一次（数目加倍）。



一个新出生的X，半分钟之后吃掉1个Y，并且，从此开始，每隔1分钟吃1个Y。



现在已知有新出生的 X=10, Y=89，求60分钟后Y的数目。



如果X=10，Y=90 呢？



本题的要求就是写出这两种初始条件下，60分钟后Y的数目。-Suppose of two microbial X and YX split time (double the number) every three minutes after birth every two minutes after the birth of the Y-split the time (double the number). X, a new-born half a minute after eaten a Y, and began every one minute to eat a Y. Are known to have new born X = 10, Y = 89, seeking the number of Y after 60 minutes. If X = 10, Y = 90 it? The request of the title is to write these two initial conditions, the number of Y after 60 minutes.