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zxbok1979

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zhang1226

гæ (³õÈëÎÄ̳)

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2Â¥2015-08-08 16:59:52
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wurongjun

ר¼Ò¹ËÎÊ (Ö°Òµ×÷¼Ò)

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zxbok1979: ½ð±Ò+20, ¡ï¡ï¡ïºÜÓаïÖú 2015-08-09 13:33:55
ÓÃÊýÖµ½â·¨!
ת»»ÎªÒ»½×(ÏòÁ¿)·½³Ì!
ÉÆ¶ñµ½Í·ÖÕÓб¨,È˼äÕýµÀÊDz×É£.
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!

´óÉñÄܲ»ÄܾßÌåµã
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))
ÔÙÕë¶ÔyÓÃÊýÖµ½â!
ÉÆ¶ñµ½Í·ÖÕÓб¨,È˼äÕýµÀÊDz×É£.
5Â¥2015-08-08 18:33:49
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

zhang1226

гæ (³õÈëÎÄ̳)

ÒýÓûØÌû:
5Â¥: Originally posted by wurongjun at 2015-08-08 18:33:49
y=(r,r')
y'=?(Õâ¸öÄã×Ô¼ºÍưÉ)
y'(0)=(r'(0),r''(0))
ÔÙÕë¶ÔyÓÃÊýÖµ½â!...

ÕâÖÖ·½·¨ºÃÏñ²»ÐУ¬Ò»½×µ¼ÊýµÄ±í´ïÊ½ÍÆ²»³öÀ´£¬Ö÷ÒªÊÇ×îºóÒ»ÏÓÐ-1´Î·½£¬ÎҾͿ¨ÔÚÕâÁË¡£
6Â¥2015-08-08 18:58:46
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

wurongjun

ר¼Ò¹ËÎÊ (Ö°Òµ×÷¼Ò)

ÒýÓûØÌû:
6Â¥: Originally posted by zhang1226 at 2015-08-08 18:58:46
ÕâÖÖ·½·¨ºÃÏñ²»ÐУ¬Ò»½×µ¼ÊýµÄ±í´ïÊ½ÍÆ²»³öÀ´£¬Ö÷ÒªÊÇ×îºóÒ»ÏÓÐ-1´Î·½£¬ÎҾͿ¨ÔÚÕâÁË¡£...

ºÍÄǸöûÓйØÏµ!
¸øÄãÒ»¸öÀý×Ó!
>> 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
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

zhang1226

гæ (³õÈëÎÄ̳)

ÒýÓûØÌû:
7Â¥: Originally posted by wurongjun at 2015-08-08 19:07:20
ºÍÄǸöûÓйØÏµ!
¸øÄãÒ»¸öÀý×Ó!
>> f=inline('','t','y')
f =
     Inline function:
     f(t,y) = ...

лл
8Â¥2015-08-08 20:04:33
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

dingd

Ìú¸Ëľ³æ (Ö°Òµ×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

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r=0ʱÊÇÆæÒìµã°É
9Â¥2015-08-09 21:17:41
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

zhang1226

гæ (³õÈëÎÄ̳)

ÒýÓûØÌû:
9Â¥: Originally posted by dingd at 2015-08-09 21:17:41
r=0ʱÊÇÆæÒìµã°É

Õâ¸ö²»Ì«È·¶¨£¬ÏÖÔÚ¾ÍÏ£ÍûÄÜÇó³ö¸Ã·½³ÌµÄÊýÖµ½â¡£
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