化简:f(x)=(cosx)^2+sinxcosx
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化简:f(x)=(cosx)^2+sinxcosx
化简:f(x)=(cosx)^2+sinxcosx
化简:f(x)=(cosx)^2+sinxcosx
由倍角公式:f(x)=(1/2)cos2x+(1/2)sin2x+1/2
由辅助角公式:f(x)=(√2/2)sin(2x+π/4)+1/2
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