²é¿´: 2750  |  »Ø¸´: 6
µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû

yemaosong

[½»Á÷] ¡¾ÇóÖú¡¿Ò»¸ö³£Î¢·Ö·½³ÌµÄͨ½â ÒÑÓÐ5È˲ÎÓë

t^2*x¨•-4tx¨@+6x=36©Rt/t    ,    x1=t^2  ,x2=t^3
Çóͨ½â
¼±ÓÃ!!!!!!!!!

Çóͨ½â
t^2x¨•-3tx¨@+8x=18t^2sin(©Rt).   x1=t^2cos(2©Rt)   ,x2=t^2sin(©Rt)

[ Last edited by javeey on 2010-5-4 at 19:25 ]
»Ø¸´´ËÂ¥
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

luomingqi

ľ³æ (ÕýʽдÊÖ)

¡ï
yemaosong(½ð±Ò+1):лл²ÎÓë
Íõ¸ßÐ۵Ŀα¾¿´¿´µÄ
¸ú×Ù
5Â¥2010-05-05 19:43:55
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 7 ¸ö»Ø´ð

fyq98

ľ³æ (ÕýʽдÊÖ)

¡ï ¡ï ¡ï ¡ï
yemaosong(½ð±Ò+1):лл²ÎÓë
СÓêÃÈÃÈ(½ð±Ò+1):лл½â´ð 2010-05-05 15:45:04
bluesine(½ð±Ò+2):Õâ¸ö¶à½±ÀøÒ»µã£¬1¸öÌ«ÉÙÁË¡£ºÇºÇ 2010-05-06 19:51:57
1.ͨ½âΪ
x(t)=c_1t^2+c_2t^3+[3lnt+1.75]/t
2.ͨ½âΪ
x(t)=c_1t^2cos(2©Rt) +c_2t^2sin(2©Rt)+6t^2sin(©Rt)
ÒÑ´úÈëÔ­·½³ÌÑéËã¡£ÕýÈ·ÎÞÎó£¡
¿ËÄѷܽø
2Â¥2010-05-05 15:34:51
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

scuxchen

½ð³æ (ÖøÃûдÊÖ)

¡ï
yemaosong(½ð±Ò+1):лл²ÎÓë
ÄÜ·ñд³ö¹ý³Ì£¬Ñ§Ï°ÏÂ
È­´ò½ÅÌß
3Â¥2010-05-05 18:59:11
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

fyq98

ľ³æ (ÕýʽдÊÖ)

¡ï ¡ï
javeey(½ð±Ò+2):лл½â´ð£¬»¶Ó­³£»ØÌû½»Á÷ 2010-05-05 23:38:59
ºÇºÇ£¬ÕâÊÇÅ·À­·½³Ì£¬Ó󣹿×ö·¨£¬¼´×ö´ú»»lnt=u,°ÑÔ­·½³Ì»¯ÎªÒÔuΪ×Ô±äÁ¿µÄ·½³Ì£¬Æä½á¹ûÊÇÒ»¸ö³£ÏµÊýÏßÐÔ·ÇÆë´Î·½³Ì£¬Óôý¶¨ÏµÊý·¨¾Í¿É½â³ö¡£
¿ËÄѷܽø
4Â¥2010-05-05 19:37:03
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 293Çóµ÷¼Á +9 zjlµÄºÅ 2026-03-16 14/700 2026-03-18 05:13 by qyttÌÚ·É
[¿¼ÑÐ] 304Çóµ÷¼Á +9 СÐÜjoy 2026-03-14 9/450 2026-03-18 04:33 by anny19840123
[¿¼²©] 26²©Ê¿ÉêÇë +3 1042136743 2026-03-17 3/150 2026-03-17 23:30 by ÇáËɲ»ÉÙËæ
[¿¼ÑÐ] ²ÄÁÏÓ뻯¹¤Çóµ÷¼Á +6 Ϊѧ666 2026-03-16 6/300 2026-03-17 20:15 by peike
[¿¼ÑÐ] 070300»¯Ñ§319Çóµ÷¼Á +4 ½õÀð0909 2026-03-17 4/200 2026-03-17 18:21 by ÖØ¿ÆÐ¡°ÔÍõ
[¿¼ÑÐ] 301Çóµ÷¼Á +4 A_JiXing 2026-03-16 4/200 2026-03-17 17:32 by ruiyingmiao
[¿¼ÑÐ] 302Çóµ÷¼Á +9 ¸ºÐÄÕßµ±Öï 2026-03-11 9/450 2026-03-17 17:13 by ruiyingmiao
[¿¼ÑÐ] »¯Ñ§¹¤³Ì321·ÖÇóµ÷¼Á +11 ´óÃ×·¹£¡ 2026-03-15 14/700 2026-03-17 17:11 by ruiyingmiao
[¿¼ÑÐ] 085601Çóµ÷¼Á +4 Du.11 2026-03-16 4/200 2026-03-17 17:08 by ruiyingmiao
[¿¼ÑÐ] 0854¿É¿çµ÷¼Á£¬Ò»×÷Ò»ÏîºËÐÄÂÛÎÄÎåÏîרÀû£¬Ê¡¡¢¹ú¼¶Ö¤Êé40+ÊýÒ»Ó¢Ò»287 +3 СÀî0854 2026-03-16 3/150 2026-03-17 13:40 by ÈÈÇéɳĮ
[¿¼ÑÐ] ²ÄÁϹ¤³Ìר˶274Ò»Ö¾Ô¸211Çóµ÷¼Á +6 Ñ¦ÔÆÅô 2026-03-15 6/300 2026-03-17 11:05 by ѧԱh26Tkc
[¿¼ÑÐ] ҩѧ383 Çóµ÷¼Á +3 ҩѧchy 2026-03-15 4/200 2026-03-16 20:51 by Ôª×Ó^0^
[¿¼ÑÐ] 0703 ÎïÀí»¯Ñ§µ÷¼Á +3 ÎÒ¿ÉÒÔÉϰ¶µÄ¶Ô 2026-03-13 5/250 2026-03-16 10:50 by ÎÒ¿ÉÒÔÉϰ¶µÄ¶ÔÂ
[¿¼ÑÐ] 080500£¬²ÄÁÏѧ˶302·ÖÇóµ÷¼ÁѧУ +4 ³õʶ¿ÉÀÖ 2026-03-14 5/250 2026-03-14 21:08 by peike
[¿¼ÑÐ] 0703»¯Ñ§µ÷¼Á +4 ¿ìÀÖµÄÏã½¶ 2026-03-11 4/200 2026-03-13 22:41 by JourneyLucky
[¿¼ÑÐ] 308Çóµ÷¼Á +5 ÊÇLupa°¡ 2026-03-11 5/250 2026-03-13 22:13 by JourneyLucky
[¿¼ÑÐ] 336Çóµ÷¼Á +6 Iuruoh 2026-03-11 6/300 2026-03-13 22:06 by JourneyLucky
[¿¼ÑÐ] 277Çóµ÷¼Á +4 anchor17 2026-03-12 4/200 2026-03-13 11:15 by °×Ò¹ÓÆ³¤
[¿¼²©] ¸£ÖÝ´óѧÑî»ÆºÆ¿ÎÌâ×éÕÐÊÕ2026Äêרҵѧλ²©Ê¿Ñо¿Éú£¬2026.03.20½ØÖ¹ +3 Xiangyu_ou 2026-03-12 3/150 2026-03-13 09:36 by duanwu655
[¿¼ÑÐ] 333Çóµ÷¼Á +3 152697 2026-03-12 4/200 2026-03-13 07:08 by Iveryant
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û