(2011•江苏模拟)设函数f(x)=2x|x|+1(x∈R)
(2011•江苏模拟)设函数f(x)=2x|x|+1(x∈R)
(2011•江苏模拟)设m为实数,函数f(x)=2x2+(x-m)|x-m|,h(x)=f(x)x(x≠0)0(x=0)
(2011•江苏模拟)函数y=3sin2x+cos2x,x∈R
(2011•惠州模拟)函数f(x)=2sin(π4−x)cos(π4+x)−1,x∈R是( )
(2011•江苏模拟)已知函数f(x)=lnx,g(x)=ax(a>0),设F(x)=f(x)+g(x)
(2011•蓝山县模拟)设函数f(x)=cosx−cos(x−π3),x∈R.
(2014•江苏模拟)已知函数f(x)=x3+x2-ax(a∈R).
(2011•重庆模拟)已知函数f(x)=x3-2ax2-3x,x∈R.
(2009•湖南模拟)已知函数f(x)=2sin(x−π3),x∈R.
(2010•怀柔区模拟)已知函数f(x)=−cosx+cos(π2−x),x∈R
(2011•江苏模拟)函数f(x)=3cosx+sinx
(2011•重庆模拟)已知函数f(x)=23cos2x+2sinxcosx+m(x∈R).