将f(x)=2sin^4 x+2cos^4 x+cos^2 x-3化简

求导f(x) = cos(3x) * cos(2x) + sin(3x) * sin(2x). 已知函数f(x)=-4cos^2 x+4√(3)sin x cos x+5,x属于R 证明sin^2(x)+cos^2(x+30)+sin(x)cos(x+30)=3/4 已知函数f(x)=cos^4 x－2sin x cos x－sin^4 x 已知f(x)=cos^4x-2根号3sinxcosx-sin^4x 化简 已知函数f(x)=2sin(x/4)cos(x/4)+(√3)cos(x/2),求 化简f(x)=2cos(x/2)·(sin(x/2)+cos(x/2))-1 f(x)=cos(2x-派/3)-2sin x*cos (派/2+x) 已知函数f(x)=cos(2x-π/3)+sin^2 x-cos^2 x 已知函数f(x)=cos(2x-π\3)+sin²x-cos²x 化简[1-(sin^4x-sin^2cos^2x+cos^4x)/(sin^2)]+3sin^2x 化简y=sin^2(x)+2sin(x)cos(x)+3cos^2(x)