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[函数] 谁来看一下$(a+\frac{1}{\sin x})(b+\frac{1}{\cos x})$

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青青子衿 posted 2013-10-13 10:16 |Read mode

谁来看一下$(a+\frac{1}{\sin x})(b+\frac{1}{\cos x})$

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其妙 posted 2013-10-13 14:08

回复 1# 青青子衿
命题者就来kk这里来寻找数据，

妙不可言，不明其妙，不着一字，各释其妙！

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