y=sin(π+2x)cos(π-2x)求周期
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y=sin(π+2x)cos(π-2x)求周期
y=sin(π+2x)cos(π-2x)
y=[-sin(2x)][-cos(2x)]
y=sin(2x)cos(2x)
y=(1/2)sin(4x)
周期:2π/4=π/2
y=sin(π+2x)cos(π-2x)求周期
y=sin(π+2x)cos(π-2x)
y=[-sin(2x)][-cos(2x)]
y=sin(2x)cos(2x)
y=(1/2)sin(4x)
周期:2π/4=π/2