已知f(x)=sin(π-x)sin(π/2-x)+cos²x
5个回答
f(x)=sinxcosx+cos²x
=(1/2)sin2x+(1+cos2x)/2
=(√2/2)sin(2x+π/4)+1/2
相关问题
已知函数f(x)= [sin(2π-x)sin(π+x)cos(-x-π)] /[2cos(π-x)sin(3π-x)]
已知f(x)=sin(5π2+x)cos(x−π2)•sin(x+π)•cos(π-x).
已知 f(x)= sin(x-3π)•cos(2π-x)•sin(-x+ 3π 2 ) cos(-x-π)•cos( π
已知f(x)=sin(x−3π)•cos(2π−x)•sin(−x+3π2)cos(−x−π)•cos(π2−x)
已知函数f(x)=sin(π-x)sin([π/2]-x)+cos2x
已知函数f(x)=2√3sin(x/2+π)cos(x/2+π/4)-sin(x+π)
已知函数 f(x)=cos(2x- π 3 )+2sin(x- π 4 )sin(x+ π 4 ) .
已知函数f(x)=cos(2x-π/3)+2sin(x-π/4)sin(x+π/4)
已知函数f(x)=cos(2x−π3)+2sin(x−π4)sin(x+π4).
已知函数f(x)已知函数f(x)=2√3sin(x/2+π/4)cos(x/2+π/4)-sin(x+π)