f(x)=2根号3sinxcosx+2cos²x-1①f（x1）=6/5,x1∈[π/4,π/2],求cos2x1

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f(x)=2根号3sinxcosx+2cos²x-1①f（x1）=6/5,x1∈[π/4,π/2],求cos2x1f(x)=2根号3sinxcosx+2cos²x-1①f（x1）=

f(x)=2根号3sinxcosx+2cos²x-1①f（x1）=6/5,x1∈[π/4,π/2],求cos2x1
f(x)=2根号3sinxcosx+2cos²x-1
①f（x1）=6/5,x1∈[π/4,π/2],求cos2x1

f(x)=2根号3sinxcosx+2cos²x-1①f（x1）=6/5,x1∈[π/4,π/2],求cos2x1
f(x)=2√3sinxcosx+2cos²x-1
=√3sin(2x)+cos(2x)
=2[(√3/2)sin(2x)+(1/2)cos(2x)]
=2sin(2x+π/6)
x1∈[π/4,π/2]
2π/3≤2x1+π/6≤7π/6 cos(2x1+π/6)

化简:f(x)=sinxcosx+[(根号3)/2]cos2x f(x)=sinx^2+根号3*sinxcosx化简 f(x)=2根号3cos^2(x)-2sinxcosx-根号3,求最值已知函数f(X)=2根号3cos平方x-2sinxcosx-根号3 f(x)=根号3sin^2x+sinxcosx-根号3/2 若函数f(x)=sinxcosx+根号3cos平方X-根号3/2如题已知函数f(x)=sinxcosx-根号3cos^2x-根号3 f(X)=sinx+cosx-根号2sinxcosx最小值化简f(x)=sinxcosx+根号3倍的cosx的平方+根号3/2 f(x)=(根号3)*(cosX的平方)+sinXcosX-((根号3)/2) f(x)=根号3sinxcosx+cosx^2,f(x)=1-根号3/2,求x 化简F(X)=2COSXCOSX(π/6-X)-根号3SIN^2X+SINXCOSX 已知函数f(x)=2根号3sinxcosx+cos2x 求f(π/6)的值化简f(x)=根号3sinxcosx-sin^2x,x∈R 已知f(x)=cos^4x-2根号3sinxcosx-sin^4x 化简化解三角函数F（x)=sin平方x+根号3sinxcosx+2cos平方x f(x)=2根号3sinxcosx+2cos²x+m,化简, 求函数f(x)=根号3cos^2x+sinxcosx的值域和周期