方程cos2x−23sinxcosx=k+1
方程cos2x−23sinxcosx=k+1
已知函数f(x)=23sinxcosx+2cos2x−1.
(2013•东莞二模)已知函数f(x)=23sinxcosx−2cos2x+1.
(2011•淮南一模)已知函数f(x)=cos2x−sin2x+23sinxcosx+1.
(2013•房山区一模)已知函数f(x)=2cos2x+23sinxcosx−1.
已知函数f(x)=3sinxcosx−cos2x+12,
∫(COS2X)/(1十SinXCOSX)dX=
∫cos2x/(1+sinxcosx) dx 求详解.
(2014•马鞍山一模)已知函数f(x)=23sinxcosx−3sin2x−cos2x+2.
已知函数f(x)=3sinxcosx−cos2x−12,x∈R.
已知函数f(x)=3sinxcosx+cos2x−12(x∈R)
已知函数f(x)=3sinxcosx−cos2x+12(x∈R).