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СÓêÃÈÃÈ(½ð±Ò+1): лл~ 2011-09-17 17:52:08
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3Â¥: Originally posted by xxppyy at 2011-09-13 12:36:04:
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[img]http://latex.codecogs.com/gif.latex?\\\\&space;k>0,y=C_1\cos&space;(\sqrt{k}\:&space;x)&plus;C_2\sin&space;(\sqrt{k}\:&space;x)\\\\&space ...

[swf]http://latex.codecogs.com/gif.latex?k<0,y=C_1e^{-\sqrt{-k}\,&space;x}+C_2\,&space;e^{\sqrt{-k}\,&space;x}[/swf]
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