°à¼¶________¡¡ÐÕÃû________¡¡¿¼ºÅ________¡¡ÈÕÆÚ________¡¡µÃ·Ö________
Ò»¡¢Ñ¡ÔñÌ⣺(±¾´óÌâ¹²6СÌ⣬ÿСÌâ6·Ö£¬¹²36·Ö£¬½«ÕýÈ·´ð°¸µÄ´úºÅÌîÔÚÌâºóµÄÀ¨ºÅÄÚ£®)
1£®ÒÑÖªlimx→£«∞3£­x£½a£¬limx→£­∞ 100x2£­x2£½b£¬Ôòa£¬b¼äµÄ¹ØϵÊÇ(¡¡¡¡)
A£®aC£®a>b D£®ÎÞ·¨È·¶¨
½âÎö£º¡ßlimx→£«∞3£­x£½limx→£«∞ 13x£½0£½a£¬
limx→£­∞ 100x2£­x2£½limx→£­∞ 100x2x2£­1£½0£½b£¬
∴a£½b.
´ð°¸£ºB
2£®Èôlimx→1 fx£­1x£­1£½1£¬Ôòlimx→1 x£­1f2£­2xµÈÓÚ(¡¡¡¡)
A£®£­1 B£®1
C£®£­12 D.12