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[ Last edited by feixiaolin on 2014-12-15 at 11:01 ]
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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}]
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3Â¥2014-12-15 12:58:56
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flyman-1984(sweety´ú·¢): ½ð±Ò+2 2014-12-25 09:16:02
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dyi¼°dxi±íʾµÄÊDzî·ÖÂð!
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ÉÆ¶ñµ½Í·ÖÕÓб¨,È˼äÕýµÀÊDz×É£.
2Â¥2014-12-15 11:41:29
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cooooldog

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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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@feixiaolin
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4Â¥2014-12-15 13:10:38
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

feixiaolin

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4Â¥: Originally posted by cooooldog at 2014-12-15 13:10:38
Êǰ¡, ÕâÖÖ×Ô¼ºµÄÎÊÌâ¶¼ÃèÊö²»Çå³þ; °®ÄªÄÜÖú
feixiaolin ...

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