已知定義在區(qū)間[0,1]上的函數(shù)
![](http://thumb.zyjl.cn/pic2/upload/papers/20140824/20140824022812525561.png)
圖象如圖所示,對(duì)于滿足0<
![](http://thumb.zyjl.cn/pic2/upload/papers/20140824/20140824022812541299.png)
<
![](http://thumb.zyjl.cn/pic2/upload/papers/20140824/20140824022812556334.png)
<1的
任意
![](http://thumb.zyjl.cn/pic2/upload/papers/20140824/20140824022812541299.png)
,
![](http://thumb.zyjl.cn/pic2/upload/papers/20140824/20140824022812556334.png)
給出下列結(jié)論:
①
![](http://thumb.zyjl.cn/pic2/upload/papers/20140824/20140824022812603795.png)
②
![](http://thumb.zyjl.cn/pic2/upload/papers/20140824/20140824022812619739.png)
③
![](http://thumb.zyjl.cn/pic2/upload/papers/20140824/201408240228126341405.png)
;
其中正確結(jié)論的序號(hào)是
.(把所有正確結(jié)論的序號(hào)都填寫在橫線上)
![](http://thumb.zyjl.cn/pic2/upload/papers/20140824/201408240228126502331.jpg)
試題分析:由
![](http://thumb.zyjl.cn/pic2/upload/papers/20140824/20140824022812665759.png)
可得
![](http://thumb.zyjl.cn/pic2/upload/papers/20140824/20140824022812681896.png)
,即兩點(diǎn)
![](http://thumb.zyjl.cn/pic2/upload/papers/20140824/20140824022812697562.png)
與
![](http://thumb.zyjl.cn/pic2/upload/papers/20140824/20140824022812712575.png)
連線的斜率大于1,顯然①不正確;由
![](http://thumb.zyjl.cn/pic2/upload/papers/20140824/20140824022812728748.png)
得
![](http://thumb.zyjl.cn/pic2/upload/papers/20140824/20140824022812743809.png)
,即表示兩點(diǎn)
![](http://thumb.zyjl.cn/pic2/upload/papers/20140824/20140824022812697562.png)
、
![](http://thumb.zyjl.cn/pic2/upload/papers/20140824/20140824022812712575.png)
與原點(diǎn)連線的斜率的大小,可以看出結(jié)論②正確;結(jié)合函數(shù)圖象,容易判斷③的結(jié)論是正確的.
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