8718| 18
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求积分表达式T=∫1/(1-e*cos(n*θ) ) dθ 等于多少? |
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发表于 2010-8-23 10:43
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发表于 2010-8-23 14:33
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发表于 2010-8-23 16:10
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发表于 2010-8-23 16:33
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