(2011•重庆模拟)已知函数f(x)=23cos2x+2sinxcosx+m(x∈R).
(2011•重庆模拟)已知函数f(x)=23cos2x+2sinxcosx+m(x∈R).
(2013•天津模拟)已知函数f(x)=sin2x+23sinxcosx+3cos2x,x∈R.求:
(2012•月湖区模拟)已知函数f(x)=3sinxcosx−cos2x−12,x∈R.
(2014•安徽模拟)设函数f(x)=2cos2x+23sinxcosx-1(x∈R).
(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.
(2011•重庆模拟)已知函数f(x)=x3-2ax2-3x,x∈R.
(2013•惠州模拟)已知函数f(x)=2sin2x+2cos2x,x∈R.
已知函数f(x)=3sinxcosx−cos2x+12(x∈R).
已知函数f(x)=cos2x+3sinxcosx+1,x∈R.
已知函数f(x)=3sinxcosx−cos2x−12,x∈R.
已知函数f(x)=2cos2x+23sinxcosx-1(x∈R),