fx=1-2sin^2(x+π/4)+2sin(x+π/8)cos(x+π/8)
已知函数fx=cos(2x-π/3)+2sin(x-π/4)sin(x+π/4)
函数fx=cos(2x-π/3)+2sin(x-π/4)sin(x+π/4)
已知函数fx=(1+1/tanx)sin^x-2sin(x+π/4)sin(x-π/4)
已知fx=2/√3sin 2x-2/1[cos^x-sin^x]-1
已知函数fx=[cosx+cos(π/2-x)][cosx+sin(π+x)]
设函数fx=2cos^2(π/4-x)+sin(2x+π/3)-1,x∈R.求函数fx的最小正周期.
求函数fx=(sin^4x+cos^4x+sin^2x*cos^2x)/(2-sin2x)
已知函数fx=sin(2x-π/3)+cos(2x-π/6)+2cos²x-1,x∈R. 1.求函
已知函数fx=sin(2x-π/3)+cos(2x-π/6)+2cos²x-1,x∈R.
已知函数fx=sin(2x+π/6)+sin(2x-π/6)+2cos^2x(x属于R)
化简2sin^2[(π/4)+x]+根号3(sin^x-cos^x)-1
sin(x+1/2π)=cosx?还是cos-x