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标题: 一个关于公式的非常小白的问题 [打印本页]

作者: yanyuxxx 时间: 2007-12-9 16:43:11 标题: 一个关于公式的非常小白的问题

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作者: 牙膏 时间: 2007-12-9 18:03:41

1.  2是指前面括号里面的公式做两遍 2。一般是U' U'   第一个U'用右手拇指拨，第二个U'用左手食指

作者: 牙膏 时间: 2007-12-9 18:05:04

即 (R U R' U')2 (R U R')=(R U R' U')(R U R' U')(R U R')

作者: 臭虫 时间: 2007-12-10 16:59:39

还有一层的意思...从还原效果上,UU或U'U'和U2都是一样的,但作者在这里使用UU或U'U',是表示在这里的这个U2用顺时针(即UU)作出来或逆时针(U'U')作出来会更顺手,所以这样书写以示区别.

作者: yanyuxxx 时间: 2007-12-15 21:48:11 标题: 谢谢

多谢牙膏,还有臭虫哦,谢谢

作者: 425754229 时间: 2007-12-29 16:36:49

偶也懂了！真是感谢发贴的老大门啊～！～～

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