已知函数f(x)=Asin(ωx+φ)+b (ω>0,|φ|<
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)的图象的一部分如图所示:
(1)求f(x)的表达式;
(2)试写出f(x)的对称轴方程.
考点分析:
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计算:(1)
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;
(2)已知α为第二象限角,且sinα=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231034495497891/SYS201311012310344954978017_ST/1.png)
,求
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的值.
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已知函数f(x)=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231034495497891/SYS201311012310344954978016_ST/0.png)
的定义域为A,函数g(x)=
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(-1≤x≤0)的值域为B.
(1)求A∩B;
(2)若C={x|a≤x≤2a-1}且C⊆B,求a的取值范围.
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sin600°的值是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231034495497891/SYS201311012310344954978000_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231034495497891/SYS201311012310344954978000_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231034495497891/SYS201311012310344954978000_ST/2.png)
D.
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已知函数f(x)=ax
2-2
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231025453035511/SYS201311012310254530355019_ST/0.png)
x,g(x)=-
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,(a,b∈R)
(Ⅰ)当b=0时,若f(x)在[2,+∞)上单调递增,求a的取值范围;
(Ⅱ)求满足下列条件的所有实数对(a,b):当a是整数时,存在x
,使得f(x
)是f(x)的最大值,g(x
)是g(x)的最小值.
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已知函数
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231025453035511/SYS201311012310254530355018_ST/0.png)
.
(1)求f(t)的值域G;
(2)若对于G内的所有实数x,函数g(x)=x
2-2x-m
2有最小值-2,求实数m的值.
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