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flyman-1984

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7Â¥: Originally posted by cooooldog at 2014-12-15 14:17:41
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flyman-1984(sweety´ú·¢): ½ð±Ò+2 2014-12-25 09:16:02
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ÕâÓëÄã¸øµÄ±í´ïʽ²»Ïà·ûºÏ!
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dyi¼°dxi±íʾµÄÊDzî·ÖÂð!
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feixiaolin

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y''=C1*sqrt(1+y'^2) + C2*2*s*sqrt(1+y'^2) + C3*3s^2*sqrt(1+y'^2)
s=Intgrate[sqrt(1+y'^2), {x=x_0, x}]
³õʼÌõ¼þ  y'(0)=tan(theta_0)
3Â¥2014-12-15 12:58:56
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cooooldog

Ìú¸Ëľ³æ (ÖøÃûдÊÖ)

ส็็็

ÒýÓûØÌû:
2Â¥: Originally posted by wurongjun at 2014-12-15 11:41:29
SÊÇ»¡³¤Âð?
ÕâÓëÄã¸øµÄ±í´ïʽ²»Ïà·ûºÏ!
(xi,yi)±íʾʲô?ÊÇÀëÉ¢µãÂð?
dyi¼°dxi±íʾµÄÊDzî·ÖÂð!
Çë°ÑÎÊÌâÃèÊöµÄÇå³þÒ»µã!

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