f(x)=sin(2x+π/6)+2sin²x
=sin2xcosπ/6+cos2xsinπ/6+1-cos2x
=根号3/2sin2x+1/2cos2x-cos2x+1
=根号3/2sin2x-1/2cos2x+1
=sin2xcosπ/6-cos2xsinπ...
已知函数f(x)=sin(2x+π/6)+2sin²x
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