f(x)=coswx(√3sinwx-coswx)+k
=√3sinwxcoswx-(coswx)^2+k
=(√3/2)sin2wx-(1/2)cos2wx-1/2+k
=sin2wxcosπ/6-cos2wxsinπ/6-1/2+k
=sin(2wx-π/6)-1/2+k
(1)最小正周期为T=2π/2w=π/2,则w=2.
f(x)=sin(4x-π/6)-1/2+k.
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f(x)=coswx(√3sinwx-coswx)+k
=√3sinwxcoswx-(coswx)^2+k
=(√3/2)sin2wx-(1/2)cos2wx-1/2+k
=sin2wxcosπ/6-cos2wxsinπ/6-1/2+k
=sin(2wx-π/6)-1/2+k
(1)最小正周期为T=2π/2w=π/2,则w=2.
f(x)=sin(4x-π/6)-1/2+k.
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