(2011•东城区模拟)已知函数f(x)=2cos2x+23sinxcosx+a,且f(π6)=4.
(2011•重庆模拟)已知函数f(x)=23cos2x+2sinxcosx+m(x∈R).
(2007•东城区一模)已知函数f(x)=12cos2x−sinxcosx−12sin2x.
(2012•南昌模拟)已知函数f(x)=3sin2x+23sinxcosx+5cos2x. &nb
(2013•浙江模拟)已知函数f(x)=23sinxcosx+2cos2x-t.
(2010•东城区模拟)函数f(x)=sin2x−3cos2x
(2011•安徽模拟)已知函数f(x)=2sin2(π4−x)−23cos2x+3
(2011•江西模拟)已知函数f(x)=23sinxcosx+2cos
(2013•天津)已知函数f(x)=−2sin(2x+π4)+6sinxcosx−2cos2x+1,x∈R.
(2010•荆门模拟)已知函数地f(x)=3x+cos2x+sin2x且a=f′(π4),f′(x)是f(x)的导函数,
(2011•淮南一模)已知函数f(x)=cos2x−sin2x+23sinxcosx+1.
(2013•东莞二模)已知函数f(x)=23sinxcosx−2cos2x+1.
(2014•马鞍山一模)已知函数f(x)=23sinxcosx−3sin2x−cos2x+2.