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设定义域为R的函数f(x)=|x2-2x|,则关于x的方程,能让g(x)取极大值...
设定义域为R的函数f(x)=|x
2-2x|,则关于x的方程
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225127489214411/SYS201311012251274892144009_ST/0.png)
,能让g(x)取极大值的x个数为( )
A.2
B.3
C.5
D.7
考点分析:
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A.
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D.
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f(x)=lnx
2,则
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=( )
A.2
B.-2
C.1
D.-1
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如图所示,液体从一圆锥形漏斗漏入一圆柱形桶中,开始时,漏斗盛满液体,经过3分钟漏完.已知圆柱中液面上升的速度是一个常量,H是圆锥形漏斗中液面下落的高度,则H与下落时间t(分)的函数关系表示的图象只可能是( )
A.
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D.
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f(x)在定义域R内可导,若f(2-x)=f(2+x),且(x-2)f′(x)<0,设
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A.a<b<c
B.c<b<a
C.c<a<b
D.a<c<b
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若
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,则常数a=( )
A.1
B.2
C.-1
D.-2
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