Znn3bq.jpeg
²é¿´: 1780  |  »Ø¸´: 9

jjgy_2002

ľ³æ (ÖøÃûдÊÖ)

[½»Á÷] ¡¾ÇóÖú¡¿ÇóÖú£ºmatlabÏÂÇóy=x(e^abs(x)+1.3)µÄÄæº¯Êý ÒÑÓÐ1È˲ÎÓë

ÇóÖú£ºmatlabÏÂÇóy=x(e^abs(x)+1.3)µÄÄæº¯Êý
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:

ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ctgu_zheng

ר¼Ò¹ËÎÊ (ÖøÃûдÊÖ)


¡ï
hiqun(½ð±Ò+1):¹ÄÀøÓ¦Öú 2010-09-19 08:17:51
Õâ¸öÒª·Öx>0ºÍx<0À´Çó½â
¸ßÖеÄÌâÄ¿
µ±x>0ʱ£¬Ä溯ÊýΪln£¨x-1.3£©
µ±x<0ʱ£¬Ä溯ÊýΪ-ln£¨x-1.3£©
2Â¥2010-09-19 07:51:29
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

robert2020

Òø³æ (ÖøÃûдÊÖ)

¡ï
nono2009(½ð±Ò+1):¹ÄÀøÓ¦Öú 2010-09-19 09:30:33
jjgy_2002(½ð±Ò+3):·Ç³£¸Ðл£¡ 2010-09-19 11:02:27
ÓÃmatlabÖеÄfinverseº¯ÊýÖ±½ÓÇó½âÄãµÄÕâ¸öº¯ÊýµÃµ½½á¹ûΪ£º
ÒýÓûØÌû:
syms x y
y=x*(exp(x)+1.3);
y=finverse(y,x)

y =

RootOf(10*exp(_Z)*_Z+13*_Z-10*x)

ÕâÖÖ½á¹ûÎÞ·¨¼ÌÐø½øÐкóÐøµÄÊýÖµÇó½â£¬²»ÖªÂ¥Ö÷ΪºÎÒªÇóÆäÄæº¯Êý£¿ÄÜ·ñ¿¼ÂÇÊýÖµÇó½â¡£
Truthfulness,Compassion,Tolerance,Beauty
3Â¥2010-09-19 08:48:30
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

jjgy_2002

ľ³æ (ÖøÃûдÊÖ)

ÒýÓûØÌû:
Originally posted by ctgu_zheng at 2010-09-19 07:51:29:
Õâ¸öÒª·Öx>0ºÍx<0À´Çó½â
¸ßÖеÄÌâÄ¿
µ±x>0ʱ£¬Ä溯ÊýΪln£¨x-1.3£©
µ±x<0ʱ£¬Ä溯ÊýΪ-ln£¨x-1.3£©

лл£¡
µ«ÕâÀïÔ­º¯ÊýÊÇy=x(e^abs(x)+1.3), ²»ÊÇy=e^abs(x)+1.3.
4Â¥2010-09-19 09:50:33
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

jjgy_2002

ľ³æ (ÖøÃûдÊÖ)

ÒýÓûØÌû:
Originally posted by robert2020 at 2010-09-19 08:48:30:
ÓÃmatlabÖеÄfinverseº¯ÊýÖ±½ÓÇó½âÄãµÄÕâ¸öº¯ÊýµÃµ½½á¹ûΪ£º

ÕâÖÖ½á¹ûÎÞ·¨¼ÌÐø½øÐкóÐøµÄÊýÖµÇó½â£¬²»ÖªÂ¥Ö÷ΪºÎÒªÇóÆäÄæº¯Êý£¿ÄÜ·ñ¿¼ÂÇÊýÖµÇó½â¡£

×î½ü¿´Ò»ÆªÎÄÏ×£¬ÎÄÖÐÓõ½Õâ¸öÄæº¯Êý¡£ÇëÎÊRootOfÊǺÎÒ⣿Èç¹û¿¼ÂÇÊýÖµÇó½â£¬¸ÃÔõôÇó£¿Ð»Ð»£¡
5Â¥2010-09-19 11:07:08
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

lijinfeng042

ľ³æ (СÓÐÃûÆø)

Matlab

¡ï
robert2020(½ð±Ò+1):ÐÁ¿àÁË£¡ 2010-09-19 11:38:57
ÒýÓûØÌû:
Originally posted by robert2020 at 2010-09-19 08:48:30:
ÓÃmatlabÖеÄfinverseº¯ÊýÖ±½ÓÇó½âÄãµÄÕâ¸öº¯ÊýµÃµ½½á¹ûΪ£º

ÕâÖÖ½á¹ûÎÞ·¨¼ÌÐø½øÐкóÐøµÄÊýÖµÇó½â£¬²»ÖªÂ¥Ö÷ΪºÎÒªÇóÆäÄæº¯Êý£¿ÄÜ·ñ¿¼ÂÇÊýÖµÇó½â¡£

µ½ÁË7.10µ¹ÊÇÇó²»³öÁË ¹À¼ÆÂ¥Ö÷ÊÇ7.0µÄ°æ±¾?mapleµÄÒýÇæ°É...
>> syms x y
y=x*(exp(x)+1.3);
y=finverse(y,x)
Warning: finverse(x*(exp(x) + 13/10)) cannot be found.  

y =

[ empty sym ]
¹¤×÷ÁË,ż¶û»áÉÏÀ´~¿ÉÒÔ¹Ø×¢ÐÂÀË΢²© @ÔÆÊÇ·çµÄÃÎ_Matlab
6Â¥2010-09-19 11:07:19
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

jjgy_2002

ľ³æ (ÖøÃûдÊÖ)

ÒýÓûØÌû:
Originally posted by lijinfeng042 at 2010-09-19 11:07:19:

µ½ÁË7.10µ¹ÊÇÇó²»³öÁË ¹À¼ÆÂ¥Ö÷ÊÇ7.0µÄ°æ±¾?mapleµÄÒýÇæ°É...
>> syms x y
y=x*(exp(x)+1.3);
y=finverse(y,x)
Warning: finverse(x*(exp(x) + 13/10)) cannot be found.  

y =

[ empty sym  ...

ÊÇmapleµÄÒýÇæ¡£ÊÇ7.1.0.246 sp3
7Â¥2010-09-19 11:17:51
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

jjgy_2002

ľ³æ (ÖøÃûдÊÖ)

Èç¹ûÖªµÀy=x*(exp(x)+1.3)µÄÖµ£¬ÄÜÇó³öxÂð£¿Èçy=50,ÈçºÎ½â³ö¶ÔÓ¦µÄx?[/b]
8Â¥2010-09-19 11:21:57
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

robert2020

Òø³æ (ÖøÃûдÊÖ)

¡ï ¡ï
jjgy_2002(½ð±Ò+2):Thanks much! 2010-09-19 12:43:35
hiqun(½ð±Ò+2):ÐÁ¿àÁË 2010-09-19 15:17:19
ÒýÓûØÌû:
>> solve('x*(exp(abs(x))+1.3)-50=0')

ans =

2.8049229085908836292298850984814


>> m=solve('x*(exp(abs(x))+1.3)-50=0');
>> m*(exp(abs(m))+1.3)

ans =

49.999999999999999999999999999998

ÕâÑù¾ÍÊÇÊýÖµÇó½â£¬¶ÔÓ¦Ò»¸öyȡֵ£¬Çó½â¶ÔÓ¦µÄxȡֵ¡£

RootOfÊÇmatlabÎÞ·¨¸ø³öº¯ÊýµÄ¾ßÌå½âÎöʽʱµÄÌæ´úÆ·¡£
ÒýÓûØÌû:
Originally posted by jjgy_2002 at 2010-09-19 11:21:57:
Èç¹ûÖªµÀy=x*(exp(x)+1.3)µÄÖµ£¬ÄÜÇó³öxÂð£¿Èçy=50,ÈçºÎ½â³ö¶ÔÓ¦µÄx?[/b]

[ Last edited by robert2020 on 2010-9-19 at 11:41 ]
Truthfulness,Compassion,Tolerance,Beauty
9Â¥2010-09-19 11:33:58
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

joy4210

½ð³æ (СÓÐÃûÆø)

¡ï ¡ï
Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû½»Á÷
ctgu_zheng(½ð±Ò+1):лл·ÖÏí 2010-10-09 23:46:17
ÒýÓûØÌû:
Originally posted by jjgy_2002 at 2010-09-19 11:21:57:
Èç¹ûÖªµÀy=x*(exp(x)+1.3)µÄÖµ£¬ÄÜÇó³öxÂð£¿Èçy=50,ÈçºÎ½â³ö¶ÔÓ¦µÄx?[/b]

>> f=inline('50-x*(exp(x)+1.3)');
>> z = fzero(f,2.0)

z =

    2.8049

>>
10Â¥2010-10-09 14:39:06
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ jjgy_2002 µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] ¿¼Ñе÷¼Á-²ÄÁÏÀà-284 +13 Ïë»»ÊÖ»ú²»Ïë½âÊ 2026-04-08 13/650 2026-04-08 23:08 by À´¿´Á÷ÐÇÓê10
[¿¼ÑÐ] »¯Ñ§308·ÖÇóµ÷¼Á +21 ÄãºÃÃ÷ÌìÄãºÃ 2026-04-07 23/1150 2026-04-08 22:32 by ¿­¿­Òª±ä˧
[¿¼ÑÐ] 070300»¯Ñ§279Çóµ÷¼Á +13 ¹þ¹þ¹þ^_^ 2026-04-08 13/650 2026-04-08 22:29 by belle15
[¿¼ÑÐ] 070300»¯Ñ§ Çóµ÷¼Á +8 73372112 2026-04-08 8/400 2026-04-08 22:21 by Öí»á·É
[¿¼ÑÐ] 311Çóµ÷¼Á +5 surte 2026-04-08 11/550 2026-04-08 22:10 by ÍÁľ˶ʿÕÐÉú
[¿¼ÑÐ] 085801 ×Ü·Ö275 ±¾¿ÆÐÂÄÜÔ´ Çóµ÷¼Á +4 bradoner 2026-04-08 5/250 2026-04-08 21:27 by cyh¡ª315
[¿¼ÑÐ] 327Çóµ÷¼Á +12 Xxjc1107. 2026-04-06 12/600 2026-04-08 16:46 by luoyongfeng
[¿¼ÑÐ] 297Çóµ÷¼Á +16 GENJIOW 2026-04-07 17/850 2026-04-08 11:05 by ÄæË®³Ë·ç
[¿¼ÑÐ] 323Çóµ÷¼Á +3 ÁÖzlu 2026-04-07 4/200 2026-04-07 23:21 by lbsjt
[¿¼ÑÐ] Ò»Ö¾Ô¸Î÷ÄÏ090202Çóµ÷¼Á +4 ÔÚÏßÇóÓÐѧÉÏ 2026-04-07 4/200 2026-04-07 19:47 by biomichael
[¿¼ÑÐ] 0855Çóµ÷¼Á²ÄÁÏ +11 ºìÌÒׯׯ 2026-04-04 12/600 2026-04-06 10:26 by À¶ÔÆË¼Óê
[¿¼ÑÐ] ÉúÎïÓëÒ½Ò©µ÷¼Á +4 Ê®Æßsa 2026-04-05 4/200 2026-04-05 20:05 by lys0704
[¿¼ÑÐ] 315Çóµ÷¼Á +5 £¦123456789 2026-04-05 5/250 2026-04-05 19:55 by nepu_uu
[¿¼ÑÐ] 278Çóµ÷¼Á +14 ·¶æÃÄÈ 2026-04-04 15/750 2026-04-04 22:15 by lqwchd
[¿¼ÑÐ] 085400µç×ÓÐÅÏ¢319Çóµ÷¼Á£¨½ÓÊÜ¿çרҵµ÷¼Á£© +5 ÐÇÐDz»Õ£ÑÛà¶ 2026-04-03 6/300 2026-04-04 21:50 by hemengdong
[¿¼ÑÐ] 316Çóµ÷¼Á +9 Ä«³½_Orion926 2026-04-04 9/450 2026-04-04 21:35 by lbsjt
[¿¼ÑÐ] Ò»Ö¾Ô¸ÉÂÎ÷ʦ·¶´óѧÉúÎïѧ317·Ö +5 1563ÈÕ¡£ 2026-04-02 5/250 2026-04-03 06:58 by ilovexiaobin
[¿¼ÑÐ] Ò»Ö¾Ô¸Î人Àí¹¤0856£¬³õÊÔ334 +3 26¿¼ÑвÄÁÏ 2026-04-02 3/150 2026-04-02 21:22 by dongzh2009
[¿¼ÑÐ] Ò»Ö¾Ô¸±±¾©¿Æ¼¼´óѧ085601²ÄÁϹ¤³ÌÓ¢Ò»Êý¶þ³õÊÔ×Ü·Ö335Çóµ÷¼Á +8 Ë«ÂíβƦÀϰå2 2026-04-02 9/450 2026-04-02 14:45 by 5896
[¿¼ÑÐ] ÄÜÔ´¶¯Á¦ µ÷¼Á +3 ²»ÆÆ²»Á¢0 2026-04-02 3/150 2026-04-02 12:46 by ffffjjjj
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û