满分5 >
高中数学试题 >
定义方程f(x)=f′(x)的实数根x叫做函数f(x)的“新驻点”,如果函数g(...
定义方程f(x)=f′(x)的实数根x
叫做函数f(x)的“新驻点”,如果函数g(x)=x,h(x)=lnx,φ(x)=cosx(x∈(
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102354187675528/SYS201311031023541876755009_ST/0.png)
,π))的“新驻点”分别为α,β,γ,那么α,β,γ的大小关系是( )
A.α<β<γ
B.α<γ<β
C.γ<α<β
D.β<α<γ
考点分析:
相关试题推荐
设函数f(x)在R上可导,其导函数为f′(x),且函数f(x)在x=-2处取得极小值,则函数y=xf′(x)的图象可能是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102354187675528/SYS201311031023541876755008_ST/images0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102354187675528/SYS201311031023541876755008_ST/images1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102354187675528/SYS201311031023541876755008_ST/images2.png)
D.
查看答案
已知P,Q为抛物线x
2=2y上两点,点P,Q的横坐标分别为4,-2,过P,Q分别作抛物线的切线,两切线交于点A,则点A的纵坐标为( )
A.1
B.3
C.-4
D.-8
查看答案
若函数
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102354187675528/SYS201311031023541876755006_ST/0.png)
是偶函数,则ϕ=( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102354187675528/SYS201311031023541876755006_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102354187675528/SYS201311031023541876755006_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102354187675528/SYS201311031023541876755006_ST/3.png)
D.
查看答案
下列函数中,既是奇函数又是增函数的为( )
A.y=x+1
B.y=-x
2C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102354187675528/SYS201311031023541876755005_ST/0.png)
D.y=x|x|
查看答案
设a,b∈R,i是虚数单位,则“ab=0”是“复数
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102354187675528/SYS201311031023541876755004_ST/0.png)
为纯虚数”的( )
A.充分不必要条件
B.必要不充分条件
C.充分必要条件
D.既不充分也不必要条件
查看答案