帮我化简一下:函数y=√3cos²x+sinxcosx-√3/2
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帮我化简一下:函数y=√3cos²x+sinxcosx-√3/2
y=√3cos²x+sinxcosx-√3/2
y=√3/2(1+cos2x)+1/2sin2x-√3/2
=√3/2cos2x+1/2sin2x
=sin60°cos2x+cos60°sin2x
=sin(2x+60°)
帮我化简一下:函数y=√3cos²x+sinxcosx-√3/2
y=√3cos²x+sinxcosx-√3/2
y=√3/2(1+cos2x)+1/2sin2x-√3/2
=√3/2cos2x+1/2sin2x
=sin60°cos2x+cos60°sin2x
=sin(2x+60°)