f(x)=4sin(2∏/3-x)cosx,求f(∏/12)
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化简下面的三角函数f(x)=sin^2x+2√3sin(x+∏/4)cos(x-∏/4)-cos^2-√3
f(sin x)=3-cos 2x,求f(cos x)=?
设f(sin x)=3-cos 2x,则f(cos x)=?
若F(sin x)=3-cos 2x 则F(cos x)=?
f(sin x)=3-cos 2x求f(cos x)
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已知f(x)=cos^4x-2根号3sinxcosx-sin^4x 化简
求函数f(x)=4*cos^2(x)+3*sin(2x)的值域
f(2x)=sin (x+3*pi/4)+cos (x-pi/2),
f(x)=(6sin^4x-7sin^2x+2)/(sin^2x-cos^2x)
f(x)=2sin(x/4)cos(x/4)+√3cos(x/2).求f(x)最小正周期.令g(x)=f(x+∏/3)判断g(x)奇偶性
f(x)=sin(x+π/4)图像怎样变成F(x)=cos(2x)
f(x)=cos(2x-x/3)+2sin(x-π/4)sin(x+π/4)sin(x+π/4)化简.
证明sin^2(x)+cos^2(x+30)+sin(x)cos(x+30)=3/4
f(x)=sin^2x+2跟号3sin(x+派/4)cos(x-派/4)-cos^2x-跟号3化简