help~help~1:F(x)是以5为周期的奇函数,F(-3)=4且cosα=0.5,则F(4cos2α)=?2:已知复数Z1=√3 sin2x+λi,Z2=m+(m-cos2x)i (λ,m,x∈R),且Z1=Z2问:1)若λ=0,且0

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