(2014•惠安县模拟)已知函数f(x)=(23tan2x+1)cos2x+1-2sin2x,x∈[0,π2].
(2014•荆州模拟)已知函数f(x)=sin2x+2sin2x1+tanx−23cos2x+3.
已知sinx=5/12 x∈(π/2,π)求sin2x,cos2x,tan2x
(2014•荆州模拟)已知函数f(x)=sin2x+2sin2x1+tanx−23cos2x+3
(2013•惠州模拟)已知函数f(x)=2sin2x+2cos2x,x∈R.
(2010•舟山模拟)已知函数f(x)=cos(2x−π3)+sin2x−cos2x.
(2013•天津模拟)已知函数f(x)=32sin2x−12(cos2x−sin2x)−1
(2011•阜阳模拟)已知函数f(x)=sin2x+cos2x.
(2014•武汉模拟)已知函数f(x)=3sin2x+2cos2x+m在区间[0,π2]上的最大值为3,则
已知sin^2x+sin2x*sinx+cos2x=1,x属于(0,派/2),求tan2x
已知函数f(x)=sin2x-cos2x+1
(2013•惠州模拟)设函数f(x)=2cos2x+sin2x+a(a∈R).
已知函数f(x)=2+sin2x+cos2x,x∈R.