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zxbok1979

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wurongjun

ר¼Ò¹ËÎÊ (Ö°Òµ×÷¼Ò)

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6Â¥: Originally posted by zhang1226 at 2015-08-08 18:58:46
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>> f=inline('[y(4);y(5);y(6);3.986005*1e14*y(1)/(sqrt(y(1)^2+y(2)^2+y(3)^2))^3;3.986005*1e14*y(2)/(sqrt(y(1)^2+y(2)^2+y(3)^2))^3;3.986005*1e14*y(3)/(sqrt(y(1)^2+y(2)^2+y(3)^2))^3]','t','y')
f =
     Inline function:
     f(t,y) = [y(4);y(5);y(6);3.986005*1e14*y(1)/(sqrt(y(1)^2+y(2)^2+y(3)^2))^3;3.986005*1e14*y(2)/(sqrt(y(1)^2+y(2)^2+y(3)^2))^3;3.986005*1e14*y(3)/(sqrt(y(1)^2+y(2)^2+y(3)^2))^3]
ÉÆ¶ñµ½Í·ÖÕÓб¨,È˼äÕýµÀÊDz×É£.
7Â¥2015-08-08 19:07:20
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wurongjun

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zxbok1979: ½ð±Ò+20, ¡ï¡ï¡ïºÜÓаïÖú 2015-08-09 13:33:55
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3Â¥2015-08-08 17:37:31
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zhang1226

гæ (³õÈëÎÄ̳)

ÒýÓûØÌû:
3Â¥: Originally posted by wurongjun at 2015-08-08 17:37:31
ÓÃÊýÖµ½â·¨!
ת»»ÎªÒ»½×(ÏòÁ¿)·½³Ì!

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4Â¥2015-08-08 17:44:50
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wurongjun

ר¼Ò¹ËÎÊ (Ö°Òµ×÷¼Ò)

ÒýÓûØÌû:
4Â¥: Originally posted by zhang1226 at 2015-08-08 17:44:50
´óÉñÄܲ»ÄܾßÌåµã...

y=(r,r')
y'=?(Õâ¸öÄã×Ô¼ºÍưÉ)
y'(0)=(r'(0),r''(0))
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5Â¥2015-08-08 18:33:49
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