(2010•广东模拟)函数f(x)=cos(-x2)+sin(π-x2).x∈R
(2013•无为县模拟)已知函数f(x)=cos(-x2)+cos(4k+12π−x2),k∈Z,x∈R.
(2010•揭阳模拟)已知函数f(x)=3sinπx+cosπx,x∈R.
(2014•贵阳模拟)已知函数f(x)=sin(2x+π3)(0≤x≤π)的零点为x1,x2,则cos(x1+x2)=(
(2012•怀化二模)已知函数f(x)=23sin(x2+π4)cos(x2+π4)−sin(x+π).
已知函数f(x)=3sin(x2+π6)+3,(x∈R)
已知函数f(x)=sin2(x2+π12)+3sin(x2+π12)cos(x2+π12)-12.
(2014•江苏模拟)已知函数f(x)=x3+x2-ax(a∈R).
(2014•泉州模拟)已知函数f(x)=2sinωx2•cosωx2-23cos2ωx2+3(ω>0),其图象与直线y=
(2012•广东模拟)已知函数f(x)=sin(x+π6)+sin(x-π6)+cosx+a(a∈R,a为常数).
(2009•惠州模拟)已知函数f(x)=x4+ax3+2x2+b(x∈R),其中a,b∈R.
(2013•广东)已知函数f(x)=2cos(x−π12),x∈R.
(2011•广东模拟)(本小题满分14分 已知函数f(x)=3sin2x+2sin(π4+x)cos(π4+x