满分5 >
高中数学试题 >
如图,圆弧型声波DFE从坐标原点O向外传播.若D是DFE弧与x轴的交点,设OD=...
如图,圆弧型声波DFE从坐标原点O向外传播.若D是DFE弧与x轴的交点,设OD=x(0≤x≤a),圆弧型声波DFE在传播过程中扫过平行四边形OABC的面积为y(图中阴影部分),则函数y=f(x)的图象大致是( )
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102439533986582/SYS201311031024395339865008_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102439533986582/SYS201311031024395339865008_ST/images1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102439533986582/SYS201311031024395339865008_ST/images2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102439533986582/SYS201311031024395339865008_ST/images3.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102439533986582/SYS201311031024395339865008_ST/images4.png)
考点分析:
相关试题推荐
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102439533986582/SYS201311031024395339865007_ST/images0.png)
函数y=Asin(ωx+φ)(ω>0,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102439533986582/SYS201311031024395339865007_ST/0.png)
,x∈R)的部分图象如图所示,则函数表达式为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102439533986582/SYS201311031024395339865007_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102439533986582/SYS201311031024395339865007_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102439533986582/SYS201311031024395339865007_ST/3.png)
D.
查看答案
已知函数f(x)=e
x-1,g(x)=-x
2+4x-3,若有f(a)=g(b),则b的取值范围为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102439533986582/SYS201311031024395339865006_ST/0.png)
B.(2-
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102439533986582/SYS201311031024395339865006_ST/1.png)
,2+
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102439533986582/SYS201311031024395339865006_ST/2.png)
)
C.[1,3]
D.(1,3)
查看答案
若等边△ABC的边长为2,平面内一点M满足
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102439533986582/SYS201311031024395339865005_ST/0.png)
,则
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102439533986582/SYS201311031024395339865005_ST/1.png)
=( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102439533986582/SYS201311031024395339865005_ST/2.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102439533986582/SYS201311031024395339865005_ST/3.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102439533986582/SYS201311031024395339865005_ST/4.png)
D.
查看答案
设0≤x<2π,且
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102439533986582/SYS201311031024395339865004_ST/0.png)
=sinx-cosx,则( )
A.0≤x≤π
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102439533986582/SYS201311031024395339865004_ST/1.png)
≤x≤
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102439533986582/SYS201311031024395339865004_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102439533986582/SYS201311031024395339865004_ST/3.png)
≤x≤
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102439533986582/SYS201311031024395339865004_ST/4.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102439533986582/SYS201311031024395339865004_ST/5.png)
≤x≤
查看答案
下列命题错误的是( )
A.命题“若x
2-3x+2=0,则x=1”的逆否命题为“若x≠1,则x
2-3x+2≠0”
B.若命题p:∃x∈R,x
2+x+1=0,则“¬p”为:∀x∈R,x
2+x+1≠0
C.若“p∧q”为假命题,则p,q均为假命题
D.“x>2”是“x
2-3x+2>0”的充分不必要条件
查看答案