ÌâÄ¿ÄÚÈÝ

£¨±¾Ð¡ÌâÂú·Ö13·Ö£©ÒÑÖªÊýÁÐ{an}µÄÇ°nÏîºÍΪSn£¬Âú×ã¹Øϵʽ(2£«t)Sn£«1£­tSn£½2t£«4(t¡Ù£­2£¬t¡Ù0£¬n£½1£¬2£¬3£¬¡­)

(1)µ±a1ΪºÎֵʱ£¬ÊýÁÐ{an}ÊǵȱÈÊýÁУ»

(2)ÔÚ(1)µÄÌõ¼þÏ£¬ÉèÊýÁÐ{an}µÄ¹«±ÈΪf(t)£¬×÷ÊýÁÐ{bn}ʹb1£½1£¬bn£½f(bn£­1)(n£½2£¬

3£¬4£¬¡­)£¬Çóbn£»

(3)ÔÚ(2)Ìõ¼þÏ£¬Èç¹û¶ÔÒ»ÇÐn¡ÊN£«£¬²»µÈʽbn£«bn£«1£¼ºã³ÉÁ¢£¬ÇóʵÊýcµÄÈ¡Öµ·¶Î§£®

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com

¾«Ó¢¼Ò½ÌÍø