已知函数f(x)=3sinxcosx-cos2x.
(2014•大港区二模)已知函数f(x)=sinxcosx+3cos2x.
已知函数f(x)=根号3sinxcosx+cos2x+1
已知函数f(x)=2根号3sinxcosx-cos2x
已知函数f(x)=根号3 sinxcosx+cos2x+1
已知函数f(x)=cos2x+sinxcosx,x∈R.
已知函数f(x)=3sinxcosx-cos(2x+π3)-cos2x
已知函数f(x)=sin2x+sinxcosx+2cos2x.
已知函数f(x)=2cos2x+2sinxcosx.
(求问)已知函数f(x)=sin2x+2根号3sinxcosx-cos2x
已知函数f(x)=2sinxcosx+cos2x(x
(2014•四川二模)已知函数f(x)=23sinxcosx-3sin2x-cos2x+3.
(2013•红桥区二模)已知函数f(x)=sin2x+2sinxcosx+3cos2x.