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wallyy1007

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[ Last edited by wallyy1007 on 2014-11-30 at 10:59 ]
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zaq123321

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feixiaolin: ½ð±Ò+2 2015-05-01 07:50:11
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3Â¥: Originally posted by Edstrayer at 2014-12-18 19:53:35
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Hi, the question here is how to use that theorem to explain the line underlined with red. Not prove that theorem.

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wallyy1007

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3Â¥: Originally posted by Edstrayer at 2014-12-18 19:53:35
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