ÌâÄ¿ÄÚÈÝ

¡¾ÌâÄ¿¡¿Á½Æ½ÐнðÊô°å¼äËù¼ÓµçѹËæʱ¼ä±ä»¯µÄ¹æÂÉÈçͼËùʾ£¬´óÁ¿ÖÊÁ¿Îªm¡¢´øµçÁ¿ÎªeµÄµç×ÓÓɾ²Ö¹¿ªÊ¼¾­µçѹΪU0µÄµç³¡¼ÓËÙºóÁ¬Ðø²»¶ÏµØÑØÁ½Æ½ÐнðÊô°å¼äµÄÖÐÏßÉäÈ룬ÈôÁ½°å¼ä¾àÇ¡ÄÜʹËùÓеç×Ó¶¼ÄÜͨ¹ý¡£ÇÒÁ½¼«³¤¶Èʹÿ¸öµç×Óͨ¹ýÁ½°å¾ùÀúʱ3t0£¬Á½Æ½ÐнðÊô°å¼ä¾àΪd£¬µç×ÓËùÊÜÖØÁ¦²»¼Æ£¬Çó£º

£¨1£©µç×Óͨ¹ýÁ½°åʱ²àÏòλÒƵÄ×î´óÖµºÍ×îСֵ£¨´ð°¸ÓÃd±íʾ£©£»

£¨2£©²àÏòλÒÆ×î´óºÍ×îСµÄµç×Óͨ¹ýÁ½°åºóµÄ¶¯ÄÜÖ®±È¡£

¡¾´ð°¸¡¿£¨1£©£»£¨2£©16:13

¡¾½âÎö¡¿

£¨1£©µç×ÓÔÚt="2" nt0£¨ÆäÖУºn= 0¡¢1¡¢2¡¢¡­¡­£©Ê±¿Ì½øÈëµç³¡£¬µç×Óͨ¹ýÁ½¼«µÄ²àÏòλÒÆ×î´ó£¬ÔÚt£½(2n£«l£©t0£¨ÆäÖÐn£½0¡¢l¡¢2¡¢¡­£©Ê±¿Ì½øÈëµç³¡µç×Óͨ¹ýÁ½°å²àÏòλÒÆ×îС£®µç×Ó²àÏòλÒÆ×î´óʱ£¬½øÈëµç³¡ÔÚÑص糡Ïß·½ÏòÉÏ×÷³õËÙ¶ÈΪÁãµÄÔȼÓËÙÔ˶¯£¬ÔÙ×÷ÔÈËÙÔ˶¯£¬ºó×÷³õËٶȲ»ÎªÁãµÄÔȼÓËÙÔ˶¯£¬¸÷¶ÎÔ˶¯µÄʱ¼ä¾ùΪt0£»µ±µç×Ó²àÏòλÒÆ×îСʱ£¬Ôڵ糡ÏßÉÏÖ»ÓÐÔÚµÚ¶þ¸öt0µÄʱ¼ä¿ªÊ¼×÷³õËÙ¶ÈΪÁãµÄÔȼÓËÙÔ˶¯£¬ÔÚµÚÈý¸öt0µÄʱ¼ä×÷ÔÈËÙÔ˶¯£®µç×Ó½øÈëƫתµç³¡ºó£¬Ôڵ糡ÖеļÓËٶȾùΪa=eUO/md,µç×Ó²àÏò×î´óλÒÆΪ

ymax=" a" t02/2£«a t02£«a t02£«a t02/2£½3a t02£½3eU0t02/md¡£ ymax=d/2

ÓÉÒÔÉÏÁ½Ê½½âµÃymax£½t0£» d£½2ymax£½2 t0£»£»µç×Ó²àÏò×îСλÒÆΪymin="a" t02/2£«a t02= ymax/2£½t0ymin=d/4

£¨2£©µç×ÓÀ뿪ƫתµç³¡Ê±µÄ¶¯ÄܵÈÓÚ¼ÓËٵ糡ºÍƫתµç³¡µç³¡Á¦×ö¹¦Ö®ºÍ£®µ±µç×ӵIJàÏòλÒÆΪ×î´óʱ£¬µç×ÓÔڵ糡ÖмÓËÙ£¨Ö»ÓмÓËÙ£¬µç³¡Á¦²Å×ö¹¦£©£®Ô˶¯µÄ¾àÀëΪy1£½2 ymax/3£½d/3£¬µç×ӵIJàÏòλÒÆ×îСʱ£¬µç×ÓÔڵ糡ÖмÓËÙÔ˶¯µÄ¾àÀëΪy2£½ymin/3=d/12,²àÏòλÒÆ×î´óµÄµç×Ó¶¯ÄÜΪ Ekmax£½eUO£«eUO¡¤ y1/d£½4eUO/3£¬²àÏòλÒÆ×îСµÄµç×Ó¶¯ÄÜΪEkmin= eUO£«eUO¡¤y2/d£½13eUO/12£¬¹ÊEkmax¡ÃEkmin£½16¡Ã13

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

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

¾«Ó¢¼Ò½ÌÍø