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对实数a与b,定义新运算“⊗”:设函数f(x)=(x2-2)⊗(x-x2),x∈...
对实数a与b,定义新运算“⊗”:
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231806901238844/SYS201311012318069012388011_ST/0.png)
设函数f(x)=(x
2-2)⊗(x-x
2),x∈R.若函数y=f(x)-c的图象与x轴恰有两个公共点,则实数c的取值范围是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231806901238844/SYS201311012318069012388011_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231806901238844/SYS201311012318069012388011_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231806901238844/SYS201311012318069012388011_ST/3.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231806901238844/SYS201311012318069012388011_ST/4.png)
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