ÌâÄ¿ÄÚÈÝ

f(x)ÊǶ¨ÒåÓòΪÕýÕûÊý¼¯µÄº¯Êý£¬¶ÔÓÚ¶¨ÒåÓòÄÚÈÎÒâµÄk£¬Èôf(k)¡Ýk2³ÉÁ¢£¬Ôòf(k£«1)¡Ý(k£«1)2³ÉÁ¢£¬ÏÂÁÐÃüÌâ³ÉÁ¢µÄÊÇ(¡¡¡¡)

(A)Èôf(3)¡Ý9³ÉÁ¢£¬Ôò¶Ô¶¨ÒåÓòÄÚÈÎÒâµÄk¡Ý1£¬¾ùÓÐf(k)¡Ýk2³ÉÁ¢

(B)Èôf(4)¡Ý16³ÉÁ¢£¬Ôò¶Ô¶¨ÒåÓòÄÚÈÎÒâµÄk¡Ý4£¬¾ùÓÐf(k)<k2³ÉÁ¢

(C)Èôf(7)¡Ý49³ÉÁ¢£¬Ôò¶Ô¶¨ÒåÓòÄÚÈÎÒâµÄk<7£¬¾ùÓÐf(k)<k2³ÉÁ¢

(D)Èôf(4)¡Ý16³ÉÁ¢£¬Ôò¶Ô¶¨ÒåÓòÄÚÈÎÒâµÄk¡Ý4£¬¾ùÓÐf(k)¡Ýk2³ÉÁ¢

D.ÃüÌân£½kʱ³ÉÁ¢£¬Ôòn£½k£«1ʱ¾Í³ÉÁ¢£¬¹ÊÈôn£½4ʱ£¬f(4)¡Ý16£¬Ôòk¡Ý4ʱ£¬f(k)¡Ýk2³ÉÁ¢.

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

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

¾«Ó¢¼Ò½ÌÍø