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jojochen1978

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feixiaolin

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Сľ³æ: ½ð±Ò+0.5, ¸ø¸öºì°ü£¬Ð»Ð»»ØÌû
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2Â¥2014-07-19 20:24:14
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jojochen1978

гæ (СÓÐÃûÆø)

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2Â¥: Originally posted by feixiaolin at 2014-07-19 20:24:14
ÏòÁ¿ÔªËØ=ÏòÁ¿ dot i (j, k)
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3Â¥2014-07-20 07:47:00
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feixiaolin

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3Â¥: Originally posted by jojochen1978 at 2014-07-20 07:47:00
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dot=µã³Ë
(3 i + 4 j + 5 k) dot i = 3;
(3 i + 4 j + 5 k) dot j = 4;
(3 i + 4 j + 5 k) dot k = 5;

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