the trajectory of each worm should be a whirling line. (my guess)
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发贴时间:2008-07-22 02:40
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only A contribute to reducing distance between A,B.
so timeToMeet = 1/1 = 1 = 1/2 + 1/2 > PI/4.
hence the traveling trajectory sure break out the northwest cubicle of the big cube.
only a whirling curve meet that condition.
.
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这里好冷清,再出两个数学/物理题,活跃一下气氛
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大树下
2008-06-05 10:09
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455 bytes , 968reads
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我的解法-第二题
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大树下
2008-07-21 13:36
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1061 bytes , 419reads
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我的解法-第一题
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大树下
2008-07-21 11:53
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1157 bytes , 375reads
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so any hint to Q1?
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1300cc
2008-06-25 00:14
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0 bytes , 233reads
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fianlly got it. only A contribute to the progress between A,B.
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1300cc
2008-07-17 02:07
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12 bytes , 242reads
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第一题,正方形的话爬了1米,正三角形的话是2/3
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shwan
2008-06-19 20:27
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77 bytes , 407reads
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cant figure out q1.
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1300cc
2008-06-21 03:50
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6 bytes , 265reads
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第一题你是对的
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大树下
2008-06-20 11:21
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87 bytes , 398reads
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小虫匀加速?加速度是0.01?那就是51?
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shwan
2008-06-20 13:29
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0 bytes , 313reads
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2nd problem
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1300cc
2008-06-19 07:44
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71 bytes , 429reads
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...
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大树下
2008-06-19 15:39
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60 bytes , 324reads
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i mean 1D. a quarter circle maybe is preferred.
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1300cc
2008-06-19 22:03
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15 bytes , 269reads
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老兄你在乱猜是吧
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大树下
2008-06-20 10:22
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16 bytes , 304reads
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the trajectory of each worm should be a whirling line. (my guess)
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1300cc
2008-07-22 02:40
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224 bytes , 273reads
)
1。永远不能相遇,或者题目给的不对
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1300cc
2008-06-15 13:20
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438 bytes , 472reads
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第二题:条件足够了
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大树下
2008-06-17 14:20
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980 bytes , 484reads
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think in a 2nd way
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1300cc
2008-06-19 07:43
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343 bytes , 511reads
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I don't know how do you derive that and what is n stand for
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大树下
2008-06-19 15:35
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346 bytes , 381reads
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while. we need formula to prove that. think e.g the worm speed is a function
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1300cc
2008-06-19 22:06
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135 bytes , 280reads
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speed converge to v1+v2
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大树下
2008-06-20 11:17
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880 bytes , 407reads
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i solve the integration wrongly
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1300cc
2008-06-21 03:49
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125 bytes , 228reads
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actually
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1300cc
2008-06-21 03:28
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483 bytes , 263reads
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approaching v1 + v2.
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大树下
2008-06-19 15:42
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0 bytes , 331reads
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so it will never catch up.
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1300cc
2008-06-19 06:14
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153 bytes , 263reads
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第一题:如果你觉得永远不能相遇请给出理由
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大树下
2008-06-17 13:46
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151 bytes , 344reads
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你确定?
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掬水掇月
2008-06-18 12:12
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121 bytes , 337reads
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上贴删除。。。
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掬水掇月
2008-06-18 12:16
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56 bytes , 315reads
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很久以前都做过了..
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hash
2008-06-07 17:11
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0 bytes , 271reads
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这两道题都有好几种解决方法:有些简单,有些复杂
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大树下
2008-06-17 14:23
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92 bytes , 259reads
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