(2012•房山区二模)已知函数f(x)=sinxsin(π2+x)+3cos2x.
(2012•房山区二模)已知函数f(x)=sinxsin(π2+x)+3cos2x.
(2013•房山区一模)已知函数f(x)=2cos2x+23sinxcosx−1.
已知函数f(x)=4sinxsin^2(π/4+x/2)+cos2x
(2009•黄冈模拟)已知函数f(x)=sin2x+2sinxsin(π2−x) +3sin2(3π2−x)
(2014•大港区二模)已知函数f(x)=sinxcosx+3cos2x.
(2011•昌平区二模)已知函数f(x)=3sin2x+2cos2x.
(2009•奉贤区二模)已知函数f(x)=2sin2(π4+x)-3cos2x
函数y=sinxsin(x+π/2)+sin2πcos2x的最大值和最小正周期
(2013•昌平区二模)已知函数f(x)=3sin(π−2x)-2cos2x+1,x∈R.
(2012•浦东新区二模)已知函数f(x)=2sinxcosx+2cos2x.
(2013•红桥区二模)已知函数f(x)=sin2x+2sinxcosx+3cos2x.
(2013•青岛二模)已知函数f(x)=sin(2x+π6)−2cos2x.