函数y=Asin(ωx+φ) (A>0,ω>0,|φ|<
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102739136620995/SYS201311031027391366209018_ST/0.png)
)的一段图象如图所示.
(1)求函数y=f(x)的解析式;
(2)将函数y=f(x)的图象向右平移
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102739136620995/SYS201311031027391366209018_ST/1.png)
个单位,得到y=g(x)的图象,求直线y=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102739136620995/SYS201311031027391366209018_ST/2.png)
与函数y=f(x)+g(x)的图象在(0,π)内所有交点的坐标.
考点分析:
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(ω>0)的最小正周期为π.
(Ⅰ)求ω的值;(Ⅱ)求f(x)的单调递减区间;
(Ⅲ)求函数f(x)在区间
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上的最大值.
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(1)求A;
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(1)若
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在一个塔底的水平面上某点测得该塔顶的仰角为θ,由此点向塔底沿直线行走了30 m,测得塔顶的仰角为2θ,再向塔底前进10
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m,又测得塔顶的仰角为4θ,则塔的高度为
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对于函数f(x)=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102739136620995/SYS201311031027391366209013_ST/0.png)
,给出下列四个命题:
①该函数是以π为最小正周期的周期函数;
②当且仅当x=π+kπ(k∈Z)时,该函数取得最小值-1;
③该函数的图象关于x=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102739136620995/SYS201311031027391366209013_ST/1.png)
+2kπ(k∈Z)对称;
④当且仅当2kπ<x<
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102739136620995/SYS201311031027391366209013_ST/2.png)
+2kπ(k∈Z)时,0<f(x)≤
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102739136620995/SYS201311031027391366209013_ST/3.png)
.
其中正确命题的序号是
.(请将所有正确命题的序号都填上)
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