"请证明能或不能".

1. Any curve escape route consisting more than line segments or part of circles is not provable in any elementary sense and it is beyond othe reach of high school students.
2. Since escape in one straight line does not work. My escape of two straight lines segments is the simplest provable solution. (my rabbit barely escaped, but it did)

所有跟帖： 

• 我的也可以逃呀，而且不管划的多慢都可以逃，适合各种小兔子。 ：） -Rock.rose- ♀ (0 bytes) () 07/14/2015 postreply 07:52:41