±±¾©Ê¯ÓÍ»¯¹¤Ñ§Ôº2026ÄêÑо¿ÉúÕÐÉú½ÓÊÕµ÷¼Á¹«¸æ
²é¿´: 1509  |  »Ø¸´: 4

jiangwu8888

гæ (ÕýʽдÊÖ)


[½»Á÷] ¡¾ÇóÖú¡¿¸÷λ´óÏÀ£¬ÇóÖúÈýµÀ¸ßÒ»ÊýѧÌâ

¸÷λ´óÏÀ£¬ÇóÖúÈýµÀ¸ßÒ»ÊýѧÌâ




»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:

» ÇÀ½ð±ÒÀ²£¡»ØÌû¾Í¿ÉÒԵõ½:

²é¿´È«²¿É¢½ðÌù

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

cronozhang

гæ (³õÈëÎÄ̳)


jiangwu8888(½ð±Ò+2): 2011-02-16 21:48:12
£¨1£©×¢Òâµ½f£¨x£©Ö»ÓÐÒ»¸öÁãµã£¬ËùÒÔf£¨x£©ÊÇÒ»¸öÍêȫƽ·½
¼´f£¨x£©£½£¨x+t)^2=x^2+2 t x +t^2 ÇÒ t<0
ËùÒÔ 2 t = a ÇÒ t^2 = a^2 -3
µÃ    (a/2)^2 =a^2-3
µÃ     a = -2

(3) x^2+5/2x+1 =0 Ò׵à x=-2 or x=-1/2

A½»B·Ç¿Õ¼¯£¬¼´ £­2»ò £­1£¯2 ÔÚ ¼¯ºÏBÀï

ÇÒBµÄ×îСֵΪa ËùÒÔ aµÄȡֵ·¶Î§±ØÐëÊÇ´Ó£¨£­inf£¬£­1£¯2)¡£
2Â¥2011-02-03 10:30:21
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

jiangwu8888

гæ (ÕýʽдÊÖ)


ÒýÓûØÌû:
Originally posted by cronozhang at 2011-02-03 10:30:21:
£¨1£©×¢Òâµ½f£¨x£©Ö»ÓÐÒ»¸öÁãµã£¬ËùÒÔf£¨x£©ÊÇÒ»¸öÍêȫƽ·½
¼´f£¨x£©£½£¨x+t)^2=x^2+2 t x +t^2 ÇÒ t<0
ËùÒÔ 2 t = a ÇÒ t^2 = a^2 -3
µÃ    (a/2)^2 =a^2-3
µÃ     a = -2

(3) x^2+5/2x+1 =0 Ò׵à x ...

µÚÒ»ÎʵĴð°¸ÊǸùºÅ3°¡
3Â¥2011-02-03 12:26:43
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
jiangwu8888(½ð±Ò+1): 2011-02-16 21:48:18
µÚÒ»ÎÊÄǸöº¯Êý f ÊǸöżº¯ÊýÂ¼ÈÈ»Èç´ËËüµÄÁãµã£¨Èç¹ûÓеϰ£©Ò»¶¨ÊdzɶԳöÏÖµÄÂ¼ÈȻֻÓÐÒ»¸öÁãµã£¬ÄÇÖ»ÄÜÊÇ x=0Â°ÑÕâ¸ö x µÄÖµ´ú½øÈ¥²»¾Í¸ã¶¨ÁËÂï¡£
4Â¥2011-02-03 20:18:50
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

leehom23

Í­³æ (³õÈëÎÄ̳)


¡ï
Сľ³æ: ½ð±Ò+0.5, ¸ø¸öºì°ü£¬Ð»Ð»»ØÌû
ÒýÓûØÌû:
3Â¥: Originally posted by jiangwu8888 at 2011-02-03 12:26:43
µÚÒ»ÎʵĴð°¸ÊǸùºÅ3°¡...

¸º¸ùºÅÈý£¬ÏëÏëÔÙ˵
5Â¥2013-09-21 00:27:35
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ jiangwu8888 µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 326Çóµ÷¼Á +3 ¹ËÈô¸¡Éú 2026-04-05 3/150 2026-04-05 18:32 by À¶ÔÆË¼Óê
[¿¼ÑÐ] 304Çóµ÷¼Á£¨085602£¬¹ýËļ¶£¬Ò»Ö¾Ô¸985£© +15 »¯¹¤ÈË999 2026-04-04 15/750 2026-04-05 16:25 by ÎÒÊǵç·çÉÈr
[¿¼ÑÐ] 085600µ÷¼Á +9 ¶«ÕÕÕÕÕÕ 2026-04-04 9/450 2026-04-05 13:44 by ujn_zhuj
[¿¼ÑÐ] 270Çóµ÷¼Á +9 С½Üpp 2026-03-31 11/550 2026-04-05 11:02 by ·çÓêÎÞÇç
[¿¼ÑÐ] Çóµ÷¼Á +3 С›g 2026-04-03 3/150 2026-04-05 09:10 by sihailian3
[¿¼ÑÐ] ²ÄÁϵ÷¼Á +12 Ò»ÑùYWY 2026-04-04 12/600 2026-04-05 08:24 by 544594351
[¿¼ÑÐ] Ò»Ö¾Ô¸Ö£ÖÝ´óѧ²ÄÁÏÓ뻯¹¤085600£¬Çóµ÷¼Á +24 ³ÔµÄ²»ÉÙ 2026-04-02 24/1200 2026-04-04 23:20 by ÓÀ×ÖºÅ
[¿¼ÑÐ] [µ÷¼ÁÐÅÏ¢]085408¹âµçÐÅÏ¢ Çóµ÷¼Á ×Ü·Ö291·ÖÊýÒ»Ó¢Ò» +3 iz11az 2026-04-02 3/150 2026-04-04 19:09 by À¶ÔÆË¼Óê
[¿¼ÑÐ] ²ÄÁϵ÷¼Á +11 ÎâèùÓ±£¡ 2026-04-03 11/550 2026-04-04 09:56 by ССÊ÷2024
[¿¼ÑÐ] 268Çóµ÷¼Á +8 ÄãºÃtg 2026-04-03 9/450 2026-04-04 05:08 by gswylq
[¿¼ÑÐ] ¿¼Ñе÷¼Á +5 СsunÒªºÃÔË 2026-04-03 5/250 2026-04-03 21:43 by à£à£à£0119
[¿¼ÑÐ] 085600ר˶²ÄÁÏÓ뻯¹¤348·ÖÇóµ÷¼Á +10 ÉÏѧÀ²£¡ 2026-04-01 11/550 2026-04-03 14:13 by °ÙÁéͯ888
[¿¼ÑÐ] Ò»Ö¾Ô¸¸´µ©²ÄÁÏ£¬Ó¢Ò»×¨Ë¶£¬×Ü·Ö357µ÷¼Á +4 1050389037 2026-04-02 5/250 2026-04-02 21:40 by dongzh2009
[¿¼ÑÐ] 366Çóµ÷¼ÁÒ»Ö¾Ô¸¶«±±´óѧ +8 ÔËÆøÀ´µÃÈôÓÐËÆÎ 2026-04-02 8/400 2026-04-02 21:39 by dongzh2009
[¿¼ÑÐ] Çóµ÷¼ÁÍÆ¼ö +3 ÄÏɽÄÏ@ 2026-04-01 3/150 2026-04-02 12:09 by xiaoranmu
[¿¼ÑÐ] ÉúÎïÓëÒ½Ò©¿¼Ñе÷¼Á +5 Ìúº©º©123425 2026-03-31 5/250 2026-04-01 18:01 by syh9288
[¿¼ÑÐ] Çóµ÷¼Á +8 11ggg 2026-03-30 8/400 2026-03-31 13:56 by nanaliuyun
[¿¼ÑÐ] 085404 22408 315·Ö +5 zhuangyan123 2026-03-31 6/300 2026-03-31 13:48 by limeifeng
[¿¼²©] ²ÄÁÏרҵÉ격 +5 ¶ÅÓêæÃdyt 2026-03-29 5/250 2026-03-31 11:19 by oooqiao
[¿¼ÑÐ] ¸£½¨Àí¹¤´óѧ²ÄÁÏѧԺÏȽøºÏ½ðÍŶÓÕÐÊÕ¿¼Ñе÷¼ÁѧÉú +3 ´ó»ª½ðÉ̶¼ 2026-03-30 4/200 2026-03-31 01:04 by ·½Ó¢¿¡602
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û