已知函数f(x)=2sin(π-x)cosx.
(Ⅰ)求f(x)的最小正周期;
(Ⅱ)求f(x)在区间
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100120860510204/SYS201311031001208605102015_ST/0.png)
上的最大值和最小值.
考点分析:
相关试题推荐
如图,O是半圆的圆心,直径AB=2
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100120860510204/SYS201311031001208605102014_ST/0.png)
,PB是圆的一条切线,割线PA与半圆交于点C,AC=4,则PB=
.
查看答案
(坐标系与参数方程选做题)极坐标方程ρ=cosθ和参数方程
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100120860510204/SYS201311031001208605102013_ST/0.png)
(t为参数)所表示的图形分别是下列图形中的(依次填写序号)
.
①线;②圆;③抛物线;④椭圆;⑤双曲线.
查看答案
若
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100120860510204/SYS201311031001208605102012_ST/0.png)
,则函数y=tan2xtan
3x的最大值为
.
查看答案
已知向量
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100120860510204/SYS201311031001208605102011_ST/0.png)
=(e
x+
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100120860510204/SYS201311031001208605102011_ST/1.png)
,-x),
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100120860510204/SYS201311031001208605102011_ST/2.png)
=(1,t),若函数f(x)=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100120860510204/SYS201311031001208605102011_ST/3.png)
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100120860510204/SYS201311031001208605102011_ST/4.png)
在区间(-1,1)上存在增区间,则t 的取值范围为
.
查看答案
黑白两种颜色的正六边形地面砖按如图的规律拼成若干个图案:
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100120860510204/SYS201311031001208605102010_ST/images0.png)
则第n个图案中有白色地面砖的块数是
.
查看答案