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设P为曲线C:y=x2+2x+3上的点,且曲线C在点P处切线倾斜角的取值范围是,...
设P为曲线C:y=x
2+2x+3上的点,且曲线C在点P处切线倾斜角的取值范围是
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124340997976776/SYS201310251243409979767007_ST/0.png)
,则点P横坐标的取值范围是( )
A.
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B.[-1,0]
C.[0,1]
D.
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