求解二阶微分方程

byrd_optics

y"=k(1+y'^2)^2

好久没用到高数了，忘的差不多了，求大虾赐教！

wxd198369

see the attachment New Microsoft Office Word Document (2).doc (38.5 KB, 下载次数: 7)

2008-11-26 13:03 上传

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byrd_optics

Thank you very much! However, the equation maked red underline, I don't think so. Coud you assure that it's right?

wxd198369

see the attachment again New Microsoft Office Word Document (3).doc (25.5 KB, 下载次数: 3)

2008-11-26 14:35 上传

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byrd_optics

I mean that  "( y' )^2" is not equar to "(y^2)' ", that is what I can't accede. Do you gree that?

wxd198369

Maybe you can try another method. See the attachment New Microsoft Office Word Document (2).doc (30 KB, 下载次数: 3)

2008-11-27 10:16 上传

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byrd_optics

隔了两个星期了，昨天兴起翻了翻高数附录的积分表，原来里面有我需要的积分公式，贴出来看看对不对。