(2014•大港区二模)已知函数f(x)=sinxcosx+3cos2x.
(2014•大港区二模)已知函数f(x)=sinxcosx+3cos2x.
(2014•四川二模)已知函数f(x)=23sinxcosx-3sin2x-cos2x+3.
(2014•甘肃二模)已知函数f(x)=sin2x+23sinxcosx+3cos2x.
(2014•四川二模)已知函数f(x)=cos2x-sin2x+23sinxcosx.
(2013•红桥区二模)已知函数f(x)=sin2x+2sinxcosx+3cos2x.
(2012•浦东新区二模)已知函数f(x)=2sinxcosx+2cos2x.
(2013•潮州二模)已知函数f(x)=3(sin2x−cos2x)−2sinxcosx.
(2009•台州二模)已知函数f(x)=sin2x+23sinxcosx+3cos2x.
(2013•南开区二模)设函数f(x)=3sinxcosx+cos2x+a.
(2014•达州二模)设函数f(x)=53sinxcosx+6cos2x+sin2x+32.
(2013•东莞二模)已知函数f(x)=23sinxcosx−2cos2x+1.
(2013•辽宁二模)已知函数f(x)=-2sinxcosx+2cos2x+1