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lds588

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Originally posted by dulituan08 at 2010-05-10 09:53:08:
лл°¡£¬¡£¡£¡£»¹ÕæÊÇÕæÊÇÕâÑù

>> dsolve('Dy=y*(1+1./y)','x')
??? Error using ==> sym.sym>expression2ref at 2408
Error: 'expression' expected [line 1, col 20]

Error in ==> sym.sym>char2ref at 2378
    s = expression2ref(x);

Error in ==> sym.sym>tomupad at 2147
        S = char2ref(x);

Error in ==> sym.sym>sym.sym at 102
                S.s = tomupad(x,'');

Error in ==> dsolve>mupadDsolve at 189
sys = sym(sys_str);

Error in ==> dsolve at 97
[R,vars] = mupadDsolve(ignoreConstraints,varargin{1:narg});

ÎÒûÓÐÓÃsyms x
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11Â¥2010-05-10 10:23:17
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

change0618

Ìú¸Ëľ³æ (ÖøÃûдÊÖ)

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12Â¥2010-05-10 12:12:36
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robert2020

Òø³æ (ÖøÃûдÊÖ)

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adu886886(½ð±Ò+1):ллÌṩÒâ¼û 2010-05-11 08:36:29
ÒýÓûØÌû:
Originally posted by lds588 at 2010-05-10 10:23:17:


>> dsolve('Dy=y*(1+1./y)','x')
??? Error using ==> sym.sym>expression2ref at 2408
Error: 'expression' expected [line 1, col 20]

Error in ==> sym.sym>char2ref at 2378
    ...

²»Ì«Çå³þ£¬ÇëʹÓÃ

clear all

Çå¿ÕһϼǼÊÔÊÔ

ÓеãºÃÆæ...ΪºÎûÓÐʹÓà syms x µÄ´íÎ󱨸æÓëʹÓõÄÒ»Ñù~~
Truthfulness,Compassion,Tolerance,Beauty
13Â¥2010-05-10 12:32:59
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

lds588

Ìú¸Ëľ³æ (ÖøÃûдÊÖ)

ÓÞ¶Û

¡ï
Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû½»Á÷
ÒýÓûØÌû:
Originally posted by robert2020 at 2010-05-10 12:32:59:


²»Ì«Çå³þ£¬ÇëʹÓÃ

clear all

Çå¿ÕһϼǼÊÔÊÔ

ÓеãºÃÆæ...ΪºÎûÓÐʹÓà syms x µÄ´íÎ󱨸æÓëʹÓõÄÒ»Ñù~~

ÓÃÁËclear all Ò»Ñù~~~
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14Â¥2010-05-10 15:02:42
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

xiaojun376

½ð³æ (СÓÐÃûÆø)

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Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû½»Á÷
adu886886(½ð±Ò+1):ллÌṩÒâ¼û 2010-05-11 08:36:39
ÓÃMAPLE°É£¬°Ñ·½³ÌÊäÈëÑ¡ÔñSOLVE DE 2s¾Í¹»ÁË
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15Â¥2010-05-10 16:16:24
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

rewind

ÖÁ×ðľ³æ (ÕýʽдÊÖ)

¡ï ¡ï ¡ï
Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû½»Á÷
robert2020(½ð±Ò+2):¹ÄÀø½»Á÷£¬²»Öª lds588 ³öÏÖ´íÎóÊÇÒòΪʲôԭÒòÄØ£¿ 2010-05-10 22:22:50
ÒýÓûØÌû:
Originally posted by robert2020 at 2010-05-09 22:13:48:


²»ÒªÓÃsyms x
Ö±½Ódsolve('Dy=y*(1+1./y)','x')¾Í¿ÉÒÔ½â¾öÁË~~

ÕâÑù¶¨ÒåµÄ»° xÊÇ×Ô±äÁ¿ÁË
ÔÚÍâÖÖµØ...
16Â¥2010-05-10 19:59:24
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

dulituan08

гæ (СÓÐÃûÆø)

ÒýÓûØÌû:
Originally posted by rewind at 2010-05-10 19:59:24:



ÕâÑù¶¨ÒåµÄ»° xÊÇ×Ô±äÁ¿ÁË

ÕâÑùÊÔ¹ý²»ÐУ¬Áú¸ñ¿âËþ·¨Ó¦¸Ã¿ÉÒÔÇóËûµÄÊýÖµ½â°É£¿
17Â¥2010-05-11 08:19:49
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

zsyf102900

гæ (³õÈëÎÄ̳)

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ÄãÊÇʲôÒâË¼ÄØ£¿Dy=y+1 £¿
18Â¥2013-01-06 10:22:45
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

zsyf102900

гæ (³õÈëÎÄ̳)

>> dsolve('Dy=y+1')
ans =
C4*exp(t) - 1
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19Â¥2013-01-06 10:24:08
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