函数的自变量x的取值范围是 . 答案: 【
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(2008•内江)函数
![](http://thumb.zyjl.cn/pic6/res/czsx/web/STSource/20131021230535848091096/SYS201310212305358480910001_ST/0.png)
的自变量的取值范围在数轴上可表示为( )
A.
![](http://thumb.zyjl.cn/pic6/res/czsx/web/STSource/20131021230535848091096/SYS201310212305358480910001_ST/images1.png)
B.
![](http://thumb.zyjl.cn/pic6/res/czsx/web/STSource/20131021230535848091096/SYS201310212305358480910001_ST/images2.png)
C.
![](http://thumb.zyjl.cn/pic6/res/czsx/web/STSource/20131021230535848091096/SYS201310212305358480910001_ST/images3.png)
D.
![](http://thumb.zyjl.cn/pic6/res/czsx/web/STSource/20131021230535848091096/SYS201310212305358480910001_ST/images4.png)
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(2008•乐山)函数
![](http://thumb.zyjl.cn/pic6/res/czsx/web/STSource/20131021231424818271237/SYS201310212314248182712012_ST/0.png)
的自变量x的取值范围为( )
A.x≥-2
B.x>-2且x≠2
C.x≥0且≠2
D.x≥-2且x≠2
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(2008•内江)函数
![](http://thumb.zyjl.cn/pic6/res/czsx/web/STSource/201310201208303756175960/SYS201310201208303756175003_ST/0.png)
的自变量的取值范围在数轴上可表示为( )
A.
![](http://thumb.zyjl.cn/pic6/res/czsx/web/STSource/201310201208303756175960/SYS201310201208303756175003_ST/images1.png)
B.
![](http://thumb.zyjl.cn/pic6/res/czsx/web/STSource/201310201208303756175960/SYS201310201208303756175003_ST/images2.png)
C.
![](http://thumb.zyjl.cn/pic6/res/czsx/web/STSource/201310201208303756175960/SYS201310201208303756175003_ST/images3.png)
D.
![](http://thumb.zyjl.cn/pic6/res/czsx/web/STSource/201310201208303756175960/SYS201310201208303756175003_ST/images4.png)
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(2008•内江)函数
![](http://thumb.zyjl.cn/pic6/res/czsx/web/STSource/20131021231424818271237/SYS201310212314248182712011_ST/0.png)
的自变量的取值范围在数轴上可表示为( )
A.
![](http://thumb.zyjl.cn/pic6/res/czsx/web/STSource/20131021231424818271237/SYS201310212314248182712011_ST/images1.png)
B.
![](http://thumb.zyjl.cn/pic6/res/czsx/web/STSource/20131021231424818271237/SYS201310212314248182712011_ST/images2.png)
C.
![](http://thumb.zyjl.cn/pic6/res/czsx/web/STSource/20131021231424818271237/SYS201310212314248182712011_ST/images3.png)
D.
![](http://thumb.zyjl.cn/pic6/res/czsx/web/STSource/20131021231424818271237/SYS201310212314248182712011_ST/images4.png)
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(2008•内江)函数
![](http://thumb.zyjl.cn/pic6/res/czsx/web/STSource/20131021231442285561923/SYS201310212314422855619008_ST/0.png)
的自变量的取值范围在数轴上可表示为( )
A.
![](http://thumb.zyjl.cn/pic6/res/czsx/web/STSource/20131021231442285561923/SYS201310212314422855619008_ST/images1.png)
B.
![](http://thumb.zyjl.cn/pic6/res/czsx/web/STSource/20131021231442285561923/SYS201310212314422855619008_ST/images2.png)
C.
![](http://thumb.zyjl.cn/pic6/res/czsx/web/STSource/20131021231442285561923/SYS201310212314422855619008_ST/images3.png)
D.
![](http://thumb.zyjl.cn/pic6/res/czsx/web/STSource/20131021231442285561923/SYS201310212314422855619008_ST/images4.png)
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