化简f(x)=cos2x+sin(5π/2+x)
已知函数f(x)=sin(π-x)sin(π2-x)+cos2x
f(x)=sin(2x-5/6π)+2cos2x化简
已知函数f(x)=sin(π-x)sin(π2-x)+cos2x.
已知函数f(x)=2sin²(π/4+x)-根号3cos2x
已知函数f(x)=2sin^2(π/4+x)-根号3cos2x
化简函数f(x)=[(1+cos2x)²-2cos2x-1]/[sin(π/4+x)*sin(π/4-x)]
已知函数f(x)=(4cos^4x-2cos2x-1)/[sin(π/4+x)·sin^2(π/4-x)]化简
已知函数f(x)=(4cos^4x-2cos2x-1)/[sin(π/4+x)·sin(π/4-x)]化简
f(x)=4sin^2(π/4+x)-2根号3cos2x-1化简!
已知函数f(x)=sin(2x+π/3)+sin(2x-π/3)+根号3*cos2x-m,若f(x)的最大值为1
f(x)=((1+cos2x)^2-2cos2x-1)/(sin(π/4+x)sin(π/4-x))
已知函数f(x)=(1+cos2x)sin∧2x,x∈R,则f(x)是