指锟斤拷(sh锟斤拷)锟斤拷锟斤拷(sh锟斤拷)锟絚锟斤拷(du锟斤拷)锟斤拷(sh锟斤拷)锟斤拷锟斤拷(sh锟斤拷)
锟斤拷源锟斤拷锟絎(w锟斤拷ng)锟絡(lu锟斤拷)锟結源 2009-08-20 13:58:31
[锟斤拷(bi锟斤拷o)锟斤拷锟斤拷锟斤拷锟斤拷(sh锟斤拷)]
锟斤拷锟斤拷一锟斤拷锟絰锟斤拷锟絵(锟斤拷锟斤拷锟絵锟斤拷10小锟絵锟斤拷每小锟絵3锟街ｏ拷锟斤拷30锟斤拷)
锟斤拷锟斤拷1.锟絆(sh锟斤拷)f:x→y=2x锟斤拷A→B锟斤拷映锟戒，锟斤拷知锟斤拷锟斤拷B={0,1,2,3,4},锟絫A锟組锟姐（锟斤拷
锟斤拷锟斤拷A.A={1锟斤拷2锟斤拷4锟斤拷8锟斤拷16}B.A={0锟斤拷1锟斤拷2锟斤拷log23}
锟斤拷锟斤拷C.A{0,1,2,log23}D.锟斤拷锟斤拷锟节滿锟斤拷l锟斤拷锟斤拷锟斤拷
锟斤拷锟斤拷锟斤拷锟斤拷映锟斤拷锟斤拷锟�锟斤拷指锟斤拷(sh锟斤拷)锟斤拷锟斤拷(du锟斤拷)锟斤拷(sh锟斤拷)锟絓(y锟斤拷n)锟斤拷.
锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷A锟斤拷每锟斤拷(g锟斤拷)元锟斤拷锟节硷拷锟斤拷锟叫讹拷锟斤拷锟斤拷锟斤拷锟斤拷2x=0锟斤拷锟斤拷锟教無锟斤拷.
锟斤拷锟斤拷锟街別锟斤拷2x=1,2,3,4,锟斤拷锟絰=0,1,log23,2.
锟斤拷锟斤拷锟斤拷锟金案★拷C
锟斤拷锟斤拷2.锟絆(sh锟斤拷)P={y|y=x2,x∈R},Q={y|y=2x,x∈R},锟絫锟斤拷锟斤拷
锟斤拷锟斤拷A.Q=PB.QPC.P∩Q={2,4}D.P∩Q={(2,4)}
……
锟斤拷锟絛锟斤拷址锟斤拷http://files.eduu.com/down.php?id=159187
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