【简答题】设函数f(x)= · ,其中向量 =(2cosx,1), =(cosx, sin2x),x∈R。 (1) 若函数f(x)=1- ,且x∈ ,求x; (2)求函数y=f(x)的单调增区间;并在给出的坐标系中画出y=f(x)在区间 [0,π]上的图像.
【单选题】What does John think about the new company magazine?
B.
It costs too much to produce.
C.
It's a useful resource.
【单选题】若函数y=sin 4 x+cos 4 x(x∈R),则函数的最小正周期为( )
【简答题】The ______________ future of the company looks very promising.
【简答题】(本题满分12分)设函数 ,其中向量 =(2cosx,1), =(cosx, sin2x),x∈R. (1)若f(x)=1- 且x∈[- , ],求x; (2)若函数y=2sin2x的图象按向量 =(m,n)(|m|$amp; )平移后得到函数y=f(x)的图象,求实数m、n的值.
【判断题】( )在镜头的视点分类中,主观视点是指导演有意图的参与剧情的视点。
【单选题】Is the new system better than the old system? 查看材料
A.
Yes, it's much better.
B.
It is a lot more effective.
C.
It doesn't seem that way.
【简答题】设函数f(x)=sin xcos x- cos(π+x)cos x(x∈R). (1)求f(x)的最小正周期; (2)若函数y=f(x)的图象按b= 平移后得到函数y=g(x)的图象,求y=g(x)在[0, ]上的最大值.
【单选题】向购房人承担房地产开发项目质量责任的是( )
【简答题】已知函数 f(x)=sin(ωx+ π 6 )+sin(ωx- π 6 )-2co s 2 ωx 2 ,x∈R (其中ω>0) (I)求函数f(x)的值域; (II)若函数y=f(x)的图象与直线y=-1的两个相邻交点间的距离为 π 2 ,求函数y=f(x)的单调增区间.