you are wrong, then D, E can not fly back to home..:)

you are wrong, then D, E can not fly back to home..:)

所有跟贴·加跟贴·新语丝读书论坛

送交者: wavelet 于 2006-09-29, 14:43:04:

回答: Wrong 由 weiqjweiqj 于 2006-09-29, 14:33:04:

D, E already fly 1/4 and need to go back with another 1/4

Yeah! My bad! I am lousy at Math :) (无内容) - weiqjweiqj (0 bytes) 2006-09-29, 14:51:16 (105141)
- your math is fine. :-) - wavelet (59 bytes) 2006-09-29, 14:53:58 (105142)