(2012•东莞市模拟)已知函数f(x)=2sinxcosx+cos2x(x∈R).
(2011•重庆模拟)已知函数f(x)=23cos2x+2sinxcosx+m(x∈R).
(2012•月湖区模拟)已知函数f(x)=3sinxcosx−cos2x−12,x∈R.
(2013•天津模拟)已知函数f(x)=sin2x+23sinxcosx+3cos2x,x∈R.求:
已知函数f(x)=cos2x+sinxcosx,x∈R.
(2014•安徽模拟)设函数f(x)=2cos2x+23sinxcosx-1(x∈R).
(2013•浙江模拟)已知函数f(x)=23sinxcosx+2cos2x-t.
(2012•南昌模拟)已知函数f(x)=3sin2x+23sinxcosx+5cos2x. &nb
(2012•德州一模)已知函数f(x)=3sinxcosx−cos2x+12(x∈R)
(2014•安徽模拟)已知f(x)=3sinxcosx-cos2x+12.
(2010•杭州一模)已知函数f(x)=2sinxcosx+2cos2x(x∈R).
(2013•惠州模拟)已知函数f(x)=2sin2x+2cos2x,x∈R.
(2013•天津)已知函数f(x)=−2sin(2x+π4)+6sinxcosx−2cos2x+1,x∈R.