函数
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100647183792912/SYS201311031006471837929010_ST/0.png)
的定义域为
.
考点分析:
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![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100647183792912/SYS201311031006471837929009_ST/images0.png)
如图,菱形ABCD的边长为2,∠A=60°,M为DC的中点,若N为菱形内任意一点(含边界),则
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100647183792912/SYS201311031006471837929009_ST/0.png)
的最大值为( )
A.3
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100647183792912/SYS201311031006471837929009_ST/1.png)
C.6
D.9
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函数y=Asin(ωx+φ)+B(A>0,φ>0,|φ|<
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100647183792912/SYS201311031006471837929008_ST/0.png)
,x∈R)的部分图象如图所示,则函数的表达式为( )
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100647183792912/SYS201311031006471837929008_ST/images1.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100647183792912/SYS201311031006471837929008_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100647183792912/SYS201311031006471837929008_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100647183792912/SYS201311031006471837929008_ST/3.png)
D.
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下列函数中,既是偶函数,又在区间(1,2)内是增函数的为( )
A.y=cos2x,x∈R
B.y=log
2|x|,x∈R且x≠0
C.y=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100647183792912/SYS201311031006471837929007_ST/0.png)
D.y=x
3+1,x∈R
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已知a=log
23,b=8
-0.7,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100647183792912/SYS201311031006471837929006_ST/0.png)
,则a,b,c的大小关系是( )
A.a>b>c
B.a>c>b
C.b>a>c
D.c>b>a
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平面向量
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100647183792912/SYS201311031006471837929005_ST/0.png)
与
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100647183792912/SYS201311031006471837929005_ST/1.png)
的夹角为60°,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100647183792912/SYS201311031006471837929005_ST/2.png)
=(2,0),|
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100647183792912/SYS201311031006471837929005_ST/3.png)
|=1,则|
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100647183792912/SYS201311031006471837929005_ST/4.png)
+2
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100647183792912/SYS201311031006471837929005_ST/5.png)
|=( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100647183792912/SYS201311031006471837929005_ST/6.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100647183792912/SYS201311031006471837929005_ST/7.png)
C.4
D.12
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