Znn3bq.jpeg
²é¿´: 2306  |  »Ø¸´: 12
µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû

Àä±ùhh

ľ³æ (ÕýʽдÊÖ)

[ÇóÖú] Çë½Ì¹ØÓÚsinhxº¯ÊýÎÊÌâ ÒÑÓÐ2È˲ÎÓë

Èç¹ûÒÑÖª£¬sinhx=a£¬ÈçºÎÇóµÃxµÄֵĨ

лл£¡
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:

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

Àä±ùhh

ľ³æ (ÕýʽдÊÖ)

ÒýÓûØÌû:
2Â¥: Originally posted by feixiaolin at 2015-03-01 22:21:53
²éÊýѧÓñí
Ó÷´º¯Êý¼ÆËã

ÓÐarcsinhxº¯ÊýÂð
4Â¥2015-03-01 23:32:25
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 13 ¸ö»Ø´ð

feixiaolin

ÈÙÓþ°æÖ÷ (ÎÄ̳¾«Ó¢)

ÓÅÐã°æÖ÷

²éÊýѧÓñí
Ó÷´º¯Êý¼ÆËã

[ ·¢×ÔСľ³æ¿Í»§¶Ë ]
2Â¥2015-03-01 22:21:53
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ÖÕ̫֮µ¶¡ªÏþ

Ìú¸Ëľ³æ (ÖøÃûдÊÖ)

Êýѧ°®ºÃÕß

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï ¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
Àä±ùhh: ½ð±Ò+4 2015-03-01 23:33:09
¸ù¾ÝË«ÇúÕýÏÒº¯ÊýµÄ¶¨Ò壺sinhx=[e^x-e^(-x)]/2¡£
Ô­·½³Ì±äΪ£º[e^x-e^(-x)]/2=a£¬
»òÕßд³É£ºe^(2x)-2a*(e^x)-1=0¡£
Áît=e^x£¬µÃµ½¹ØÓÚtµÄÒ»Ôª¶þ´Î·½³Ì£ºt^2-2at-1=0¡£
½ÓÏÂÀ´ÎÊÌâ¾Í²»Äѽâ¾öÁË¡£
PreferenceforMathematics
3Â¥2015-03-01 23:16:36
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

Àä±ùhh

ľ³æ (ÕýʽдÊÖ)

ÒýÓûØÌû:
3Â¥: Originally posted by ÖÕ̫֮µ¶¡ªÏþ at 2015-03-01 23:16:36
¸ù¾ÝË«ÇúÕýÏÒº¯ÊýµÄ¶¨Ò壺sinhx=/2¡£
Ô­·½³Ì±äΪ£º/2=a£¬
»òÕßд³É£ºe^(2x)-2a*(e^x)-1=0¡£
Áît=e^x£¬µÃµ½¹ØÓÚtµÄÒ»Ôª¶þ´Î·½³Ì£ºt^2-2at-1=0¡£
½ÓÏÂÀ´ÎÊÌâ¾Í²»Äѽâ¾öÁË¡£

Ŷ£¬Õâô¸´ÔÓ°¡£¬ÎÒÒÔΪÓÐÏֳɵĹ«Ê½¿ÉÒÔÌ×ÓÃÄØ
лл°¡£¬·Ç³£¸Ðл
5Â¥2015-03-01 23:33:01
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] ¿ÒÇëÓÐѧУÊÕÁô +5 ¿Â»´È» 2026-04-12 5/250 2026-04-15 21:49 by noqvsozv
[¿¼ÑÐ] 22408 312Çóµ÷¼Á +20 ÃÅ·ÃþÃþ 2026-04-14 21/1050 2026-04-15 20:39 by cuisz
[¿¼²©] 26Äêµç³Ø·½Ïò²©Ê¿ÉêÇë 10+3 15615939259 2026-04-09 4/200 2026-04-15 14:22 by kwansei
[¿¼ÑÐ] 085500Çóµ÷¼Á²ÄÁÏ +11 Ò×11122 2026-04-09 11/550 2026-04-14 17:59 by lhj2009
[¿¼ÑÐ] 367Çóµ÷¼Á +11 hffQAQ 2026-04-09 11/550 2026-04-14 17:48 by lhj2009
[¿¼ÑÐ] ҩѧ305Çóµ÷¼Á +10 Â꿨°Í¿¨boom 2026-04-10 10/500 2026-04-14 15:55 by zs92450
[¿¼ÑÐ] Çóµ÷¼Á +12 ºÎÆøÕý 2026-04-13 13/650 2026-04-14 14:47 by zs92450
[¿¼ÑÐ] ¿¼Ñе÷¼Á +13 ³¤¹­°Á 2026-04-13 14/700 2026-04-14 14:44 by zs92450
[¿¼ÑÐ] 085600²ÄÁÏÓ뻯¹¤329·ÖÇóµ÷¼Á +24 Ò¶zilin 2026-04-13 25/1250 2026-04-14 09:20 by ÊÔ¹ÜÆÆÁÑ
[¿¼ÑÐ] Çóµ÷¼Á +3 ÎÒ°®¸ßÊý¸ßÊý°®Î 2026-04-12 3/150 2026-04-14 01:00 by Íõ¬Bè±
[¿¼ÑÐ] һ־Ը³¶«´óѧ071000ÉúÎïѧѧ˶³õÊÔ·ÖÊý276Çóµ÷¼Á +8 Ľ¾øcc 2026-04-09 8/400 2026-04-13 14:08 by ÕÅzhihao
[¿¼ÑÐ] 296Çóµ÷¼Á +6 Íô£¡£¿£¡ 2026-04-09 6/300 2026-04-11 11:25 by zhq0425
[¿¼ÑÐ] 346£¬¹¤¿ÆÇóµ÷¼Á +3 moser233 2026-04-09 3/150 2026-04-11 10:04 by zhq0425
[¿¼ÑÐ] Ò»Ö¾Ô¸¶«±±´óѧ¿ØÖƹ¤³Ì085406Êý¶þÓ¢¶þ385£¬Çóµ÷¼Á +8 Ezra_Zhang 2026-04-09 8/400 2026-04-11 09:15 by Öí»á·É
[¿¼ÑÐ] 263ÄÜÔ´¶¯Á¦×¨Ë¶Çóµ÷¼Á +3 ¼Ó´óºÅ·¹ºÐ´ü 2026-04-10 3/150 2026-04-10 22:23 by 286640313
[¿¼ÑÐ] Çóµ÷¼Á +5 ²»»á·ÉµÄÓã@ 2026-04-10 5/250 2026-04-10 19:07 by chemisry
[¿¼ÑÐ] 301Çóµ÷¼Á +5 149. 2026-04-10 5/250 2026-04-10 15:45 by ²ñС°×
[¿¼ÑÐ] 085800 ÄÜÔ´¶¯Á¦Çóµ÷¼Á +6 °¢biu°¡°¡°¡°¡°¡ 2026-04-10 6/300 2026-04-10 15:03 by hemengdong
[¿¼ÑÐ] Çóµ÷¼Á ²ÄÁÏÓ빤³Ì 324·Ö ר˶ +19 ôæôæÒ»ÊéÉú 2026-04-10 21/1050 2026-04-10 11:41 by wp06
[¿¼ÑÐ] 314Çóµ÷¼Á +14 weltZeng 2026-04-09 14/700 2026-04-09 23:14 by wolf97
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û