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yangyugdzs

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yangyugdzs

½ð³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
8Â¥: Originally posted by hank612 at 2015-05-08 02:50:35
Â¥Ö÷¿ÉÒÔÓÃËã·¨À´¼òµ¥±©Á¦ÆÆ½â. ǰÌá: µ±A>0,B>0, A+B>C>max(A,B)ʱ, ÓÐe^A+e^B<1+e^{A+B} ºÍe^A+e^B<e^C+e^{A+B-C}

Ìõ¼þ: ¼¯ºÏS={e^{x1}, e^{x2},...,e^{xk}},T=¿Õ¼¯. ÆäÖÐÿ¸öxi·Ç¸º. ¸ø¶¨ ...

ÐֵܺÃÏñûÓÐÕýÈ·Àí½âÌâÄ¿µÄÒâ˼£¬¸ø³öµÄºÃÏñ²»ÊÇÏëÒªµÄ£¬ÎÒÔÙÏëÏë¡£²»¹ý»¹ÊǺÜллÄú£¡ £º)
9Â¥2015-05-11 13:00:40
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²é¿´È«²¿ 11 ¸ö»Ø´ð

hank612

ÖÁ×ðľ³æ (ÖøÃûдÊÖ)

Äã¿ÉÒ԰Ѳ»µÈʽÓÒ±ß×îºóÒ»Ïî
ÇåÎúµØÐ´³öÀ´Ã´? ±ÈÈç˵, k=3, j=1, ÄãµÄ²»µÈʽÊÇʲôÑù×ÓµÄ? лл.
We_must_know. We_will_know.
2Â¥2015-05-06 04:39:04
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

yangyugdzs

½ð³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
2Â¥: Originally posted by hank612 at 2015-05-06 04:39:04
Äã¿ÉÒ԰Ѳ»µÈʽÓÒ±ß×îºóÒ»Ïî
2^{\sum_{i=k}^{j+k-1}n_i} ÇåÎúµØÐ´³öÀ´Ã´? ±ÈÈç˵, k=3, j=1, ÄãµÄ²»µÈʽÊÇʲôÑù×ÓµÄ? лл.

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3Â¥2015-05-06 21:25:52
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hank612

ÖÁ×ðľ³æ (ÖøÃûдÊÖ)

ÒýÓûØÌû:
3Â¥: Originally posted by yangyugdzs at 2015-05-06 21:25:52
...

ÎÒÃÇÏÈ¿´Ò»¸öÒýÀí:  , ¶ÔÈÎÒâx>0, 1>a>0.

Õâ¸öÒýÀíµÄÒâ˼ÊÇ, µ±ÓÐÁ½¸öÖ¸Êýº¯ÊýÏà¼Ó,²¢ÇÒÒªÇó(·Ç¸º)Ãݴεĺͺ㶨, ÄÇôµ±ÃÝ´ÎÒ»¸öΪÁã,ÁíÒ»¸ö×î´óʱ, ºÍº¯Êý×î´ó, .

ÄÇÂ¥Ö÷×ÐϸÏëÏë²»µÈʽÓÒ²à,¼ÙÈç¹Ì¶¨³ýÁËÏàÁÚµÄÒ»¶ÔÖ®ÍâµÄÆäËûÖ¸±ê, ÓÖ±£³Ö²»±ä, ÄÇô²»µÈʽ×ó²àÖµÊDz»±äµÄ, ¶ø²»µÈʽÓÒ²àµÄÖµµ±ÇÒ½öµ±ÆäÖÐÒ»¸ö, ÁíÒ»¸öµÈÓÚʱ×î´ó(¾ßÌåÄĸöÖµÇåÁãÒªÊÓÇé¿ö¶ø¶¨).

Õâô¶àÀ´¼¸ÏÂ, ÓÒ¶Ë×î´óÖµÖ»ÄÜÔÚÒ»¸ön_iµÈÓÚÈ«²¿ºÍ, ÆäÓàn_i¾ùΪÁãʱȡµ½. ¶øÕâ¸öºÍ¾ÍÊǵÈÓÚ (k-j)¸ö1¼ÓÉÏ j¸ö , ¾ÍÊDz»µÈʽ×ó¶Ë. ¿ÉÊÇÓÉÓÚÄãÒªÇó×îÉÙÓÐÁ½¸ö·ÇÁãµÄn_i, ËùÒÔ×î´óÖµÊÇÈ¡²»µ½µÄ, ¼´²»µÈʽÊÇÑϸñ´óÓںŵÄ.

Ö¸Êýº¯ÊýÒÔeΪµ×ºÍÒÔ2Ϊµ×Íêȫû²î, ֻҪÿ¸ön_i¶¼³ËÒÔln2±ä³É¾ÍÖªµÀÁË.
We_must_know. We_will_know.
4Â¥2015-05-07 02:23:37
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