y=f(x)y等于根号x的图像像在[-π，2/3π]...

来源：蜘蛛抓取(WebSpider) 时间：2011-10-22 02:47 标签： y等于根号x的图像
已知函数f(x)=4cosxsin(x+π/3)-√3.(1)试说明函数y=f(x)的图象可由函数y=2sin2x的图象经过怎样的变换得到;已知函数f(x)=4cosxsin(x+π/3)-√3.(1)试说明函数y=f(x)的图象可由函数y=2sin2x的图象经过怎样的变_百度作业帮
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已知函数f(x)=4cosxsin(x+π/3)-√3.(1)试说明函数y=f(x)的图象可由函数y=2sin2x的图象经过怎样的变换得到;已知函数f(x)=4cosxsin(x+π/3)-√3.(1)试说明函数y=f(x)的图象可由函数y=2sin2x的图象经过怎样的变
已知函数f(x)=4cosxsin(x+π/3)-√3.(1)试说明函数y=f(x)的图象可由函数y=2sin2x的图象经过怎样的变换得到;已知函数f(x)=4cosxsin(x+π/3)-√3.(1)试说明函数y=f(x)的图象可由函数y=2sin2x的图象经过怎样的变换得到;(2)写出函数f(x)图象的对称轴方程及对称中心座标.好人一生平安啊.
f(x)=4cosxsin(x+π/3)-√3.=4cosx(sinxcosπ/3+cosxsinπ/3)-√3=2sinxcosx+2√3cos²x-√3=sin2x+√3(2cos²x-1)=sin2x+√3cos2x=2sin(2x+π/3)∵f(x)=2sin[2(x+π/6)]∴由函数y=2sin2x的图象向左平移π/6单位可以得到y=f(x)的图像2由2x+π/3=kπ+π/2,k∈Z得x=kπ+π/12,k∈Z∴函数f(x)图象的对称轴方程为x=kπ+π/12,k∈Z由2x+π/3=kπ,k∈Z得x=kπ-π/6,k∈Z∴函数f(x)图象的对称中心座标.为（kπ-π/6,0）k∈Z已知定义在区间[-π,2π/3]上的函数y=f（x）的图像关于直线x=-π/6对称已知定义在区间[-π,2/3π]上的函数y=f（x）的图像关于直线x=-π/6对称,当x∈[-π/6,2π/3]时,函数分别过了（π/6,1）（2π/3,0）,函_百度作业帮
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已知定义在区间[-π,2π/3]上的函数y=f（x）的图像关于直线x=-π/6对称已知定义在区间[-π,2/3π]上的函数y=f（x）的图像关于直线x=-π/6对称,当x∈[-π/6,2π/3]时,函数分别过了（π/6,1）（2π/3,0）,函
已知定义在区间[-π,2π/3]上的函数y=f（x）的图像关于直线x=-π/6对称已知定义在区间[-π,2/3π]上的函数y=f（x）的图像关于直线x=-π/6对称,当x∈[-π/6,2π/3]时,函数分别过了（π/6,1）（2π/3,0）,函数f（x）=Asin（ωx＋φ）,A＞0,ω＞0,-π/2＜φ＜π/2（1）求函数y=f(x)在[-π,2/3π]的表达式 （2）求方程f(x)=根号2/2的解
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不可以问老师吗？0)的最小正周期为2π/3,求w的值；若函数y=g(x)的图像是由y=f(x)的图设函数f(x)=(sinwx+coswx)平方+2cos方wx(w>0)的最小正周期为2π/3,求w的值；若函数y=g(x)的图像是由y=f(x)">
设函数f(x)=(sinwx+coswx)方+2coswx(w>0)的最小正周期为2π/3,求w的值；若函数y=g(x)的图像是由y=f(x)的图设函数f(x)=(sinwx+coswx)平方+2cos方wx(w>0)的最小正周期为2π/3,求w的值；若函数y=g(x)的图像是由y=f(x)_百度作业帮
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设函数f(x)=(sinwx+coswx)方+2coswx(w>0)的最小正周期为2π/3,求w的值；若函数y=g(x)的图像是由y=f(x)的图设函数f(x)=(sinwx+coswx)平方+2cos方wx(w>0)的最小正周期为2π/3,求w的值；若函数y=g(x)的图像是由y=f(x)
设函数f(x)=(sinwx+coswx)方+2coswx(w>0)的最小正周期为2π/3,求w的值；若函数y=g(x)的图像是由y=f(x)的图设函数f(x)=(sinwx+coswx)平方+2cos方wx(w>0)的最小正周期为2π/3,求w的值；若函数y=g(x)的图像是由y=f(x)的图象向右平移π/2个单位长度得到,求y=g(x)的单调增区间
f(x)=1+sin2wx+(1+cos2wx) =根号2*sin(2wx+π/4)+2
T=2π/2W=2π/3
2W=3f(x)=根号2*sin(3x+π/4)+2g(x)=f(x-π/2)=根号2*sin[3(x-π/2)+π/4]+2=根号2*sin[3x-3π/2+π/4]+2
=根号2*sin[3x+3π/4]+2-π/2+2kπ≤3x+3π/4≤π/2+2kπ-5π/12+2kπ/3≤x≤-π/12+2kπ/3单调增区间为：[-5π/12+2kπ ,π/12+2kπ/3]已知函数f（x）=sinwx（w＞0）若y=f（x）图像过（2π/3,0）点,且在区间（0,3π）上是增函数,求w的值?_百度作业帮
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已知函数f（x）=sinwx（w＞0）若y=f（x）图像过（2π/3,0）点,且在区间（0,3π）上是增函数,求w的值?
已知函数f（x）=sinwx（w＞0）若y=f（x）图像过（2π/3,0）点,且在区间（0,3π）上是增函数,求w的值?
过（2π/3,0）点,说明w*(2π/3)是π的整数倍,设w*(2π/3)=n*π,n为正整数w=3n/2w可以等于3/2,3,9/2……------------------------------------------------------------------------------------在区间（0,3π）上是增函数,说明w*3π

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