已知sin(x+π/3)cos(x-π/3)+cos(x-π/3)sin(x-π/3)=-(2根号2/3)且π
已知sin(x+π/3)cos(x-π/3)+cos(x-π/3)sin(x-π/3)=-(2根号2/3)且π
已知函数f(x)=cos(2x-π/3)+sin^2 x-cos^2 x
已知函数f(x)=cos(2x-π\3)+sin²x-cos²x
已知函数f(x)=sin^2*x-根号3*sinπ/4*x*cosπ/4*x
已知函数f(x)=sin²ωx+根号3sinωx乘sin(ωx+π/2)+2cos²ωx,x∈R,(
已知向量a=[cos(3x/2),sin(3x/2)],b=[cos(x/2),-sin(x/2),]且x∈[0,π/2
已知向量a=(cos(3x/2),sin(3x/2)),b=(cos(x/2),-sin(x/2)),且x∈[0,π/2
已知函数f(x)=[sin(x+a/2)+根号3cos(x+a/2)]*cos(x+a/2),若a属于(0,π),且f(
sin(x+π/3)+2sin(x-π/3)-根号3cos(2π/3-x)
已知函数f(x)= [sin(2π-x)sin(π+x)cos(-x-π)] /[2cos(π-x)sin(3π-x)]
已知函数f(x)=根号3sinπx+cosπx,x属于R
化简2sin^2[(π/4)+x]+根号3(sin^x-cos^x)-1