(2010•荆门模拟)已知函数地f(x)=3x+cos2x+sin2x且a=f′(π4),f′(x)是f(x)的导函数,
(2010•荆门模拟)已知函数地f(x)=3x+cos2x+sin2x且a=f′(π4),f′(x)是f(x)的导函数,
已知函数地f(x)=3x+cos2x+sin2x且a=f′(π4),f′(x)是f(x)的导函数,则过曲线y=x3上一点
(2010•舟山模拟)已知函数f(x)=cos(2x−π3)+sin2x−cos2x.
已知函数f(x)=3sin2x+cos2x.
已知函数f(x)=cos2x/sin(x+π/4),求函数f(x)的定义域 求:若f(x)=4/3,sin2x的值
已知函数f(x)=a(sin2X+cos2X),且f(π/4)=-1
(2010•东城区模拟)函数f(x)=sin2x−3cos2x
(2011•阜阳模拟)已知函数f(x)=sin2x+cos2x.
已知函数f(x)=sin2x-cos2x+1
(2013•黄梅县模拟)已知函数f(x)=3sin2x-cos2x,x∈R,给出以下说法:
已知函数f(x)=cos(2x+π/3)+sin2x-cos2x
(2013•天津模拟)已知函数f(x)=32sin2x−12(cos2x−sin2x)−1