1 . “学如逆水行舟,不进则退;心似平原跑马,易放难收.”源于《增广贤文》,《增广贤文》是勉励人们专心学习的,每天进步一点点,前进不止一小点.我们可以把式子
中的
看作是每天的“进步”率,一年后的值是
;而把式子
中的
看作是每天的“退步”率,一年后的值是
.照此计算,大约经过多少天“进步”后的值是“退步”后的值的10倍? ( )(参考数据:
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/109ec322df85f325ce3d0c473db06d26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a317f002fd3ae7f3b041d4078e81fe07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a4014d7967023e865ca7492ec61cb45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9100ec89ca33a11b42d936c2e1872f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a317f002fd3ae7f3b041d4078e81fe07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aa5dd662724467a2d223183962b1e87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc22dca1ccdd439c71a90b42f296b4b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00408f3816eea9f5cf31300318ec70a3.png)
A.100天 | B.108天 | C.115天 | D.124天 |
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