满分5 >
高中数学试题 >
函数y=sin(ωx+ϕ)的部分图象如右图,则ω,ϕ可以取的一组值是( ) A....
函数y=sin(ωx+ϕ)的部分图象如右图,则ω,ϕ可以取的一组值是( )
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049000_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049000_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049000_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049000_ST/2.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863804944/SYS201310232121388638049000_ST/3.png)
考点分析:
相关试题推荐
已知曲线C是到点
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863801513/SYS201310232121388638015021_ST/0.png)
和到直线
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863801513/SYS201310232121388638015021_ST/1.png)
距离相等的点的轨迹,l是过点Q(-1,0)的直线,M是C上(不在l上)的动点;A、B在l上,MA⊥l,MB⊥x轴(如图).
(Ⅰ)求曲线C的方程;
(Ⅱ)求出直线l的方程,使得
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863801513/SYS201310232121388638015021_ST/2.png)
为常数.
查看答案
已知a是实数,函数f(x)=x
2(x-a).
(Ⅰ)若f′(1)=3,求a的值及曲线y=f(x)在点(1,f(1))处的切线方程;
(Ⅱ)求f(x)在区间[0,2]上的最大值.
查看答案
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863801513/SYS201310232121388638015019_ST/images0.png)
如图,矩形ABCD和梯形BEFC所在平面互相垂直,∠BCF=∠CEF=90°,AD=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863801513/SYS201310232121388638015019_ST/0.png)
.
(Ⅰ)求证:AE∥平面DCF;
(Ⅱ)当AB的长为何值时,二面角A-EF-C的大小为60°?
查看答案
一个袋中装有大小相同的黑球、白球和红球,已知袋中共有10个球,从中任意摸出1个球,得到黑球的概率是
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863801513/SYS201310232121388638015018_ST/0.png)
;从中任意摸出2个球,至少得到1个白球的概率是
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212138863801513/SYS201310232121388638015018_ST/1.png)
.求:
(Ⅰ)从中任意摸出2个球,得到的数是黑球的概率;
(Ⅱ)袋中白球的个数.
查看答案
已知数列{x
n}的首项x
1=3,通项x
n=2
np+np(n∈N*,p,q为常数),且成等差数列.求:
(Ⅰ)p,q的值;
(Ⅱ)数列{x
n}前n项和S
n的公式.
查看答案