#1
|
|||
|
|||
͹ءÃÁ+ ʶԵÔ
1.¡Ó˹´ãËéé ${t}_{n}$ = ${2}^{n}$ àÁ×èÍ n = 1,2,3,.......
áÅÐ ${a}_{n}$ = ${5}^{{t}_{n}}$ + ${5}^{{-t}_{n}} $ àÁ×èÍ n = 1,2,3,..... ¤èҢͧ ${lim}_{n ÅÙèà¢éÒÊÙè infinity }$ ${a}_{n+1} /( {a}_{1}{a}_{2}... {a}_{n} )$ à·èҡѺà·èÒã´ 2.㹡ÒÃÊͺÇÔªÒ¤³ÔµÈÒʵÃì¢Í§¹Ñ¡àÃÕ¹Ëéͧ˹Öè§ ÁչѡàÃÕ¹ 30 ¤¹ »ÃÒ¡¯ÇèÒÁչѡàÃÕ¹ 17 ¤¹ Êͺä´é¤Ðá¹¹ªèǧ 10-39 ¤Ðá¹¹ ÁչѡàÃÕ¹ 10 ¤¹ Êͺä´é¤Ðṹ㹪èǧ 40-49 ¤Ðá¹¹ áÅÐÁչѡàÃÕ¹ 3 ¤¹ Êͺä´éªèǧ 50-59 ¤Ðá¹¹ 2.1¶éÒáºè§à¡Ã´à»ç¹ 3 ÃдѺ ¤×Í A,B,C â´Â·Õè 10% ¢Í§¹Ñ¡àÃÕ¹ä´éà¡Ã´ A áÅÐ20% ¢Í§¹Ñ¡àÃÕ¹ä´éà¡Ã´ B áÅéǤÐá¹¹ÊÙ§ÊØ´¢Í§ C à·èҡѺ¡Õè¤Ðá¹¹ 2.2¨Ò¡¢éÍÁÙÅ¢éÒ§µé¹ ÊÁÁµÔÇèÒ¤Ðá¹¹ÁÕ¡ÒÃᨡᨧ»¡µÔ ÁÕÊÑÁ»ÃÐÊÔ·¸Ôì¡ÒÃá»Ã¼Ñ¹à»ç¹ 1/3 ¶éÒ¤Ðá¹¹ÊÙ§ÊØ´¢Í§à¡Ã´ B ÁÕ¤Ðá¹¹Áҵðҹà»ç¹ 1.5 áÅéÊ ¤Ðá¹¹à©ÅÕè¢ͧ¹Ñ¡àÃÕ¹Ëéͧ¹Õéà·èҡѺ¡Õè¤Ðá¹¹ |
#2
|
||||
|
||||
__________________
µéͧÊÙé¶Ö§¨Ðª¹Ð CCC Mathematic Fighting à¤ÃÕ´ àÅ |
|
|