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1-0引论 决策与决策分析的定义 1. Decision的本义(牛津词典) the act of deciding a conclusive judgment the conclusion arrived 2苏联大百科全书 决策是自由意志行动的必要元素…和实现自由意志行动的手段。自由意志行动要求 先有目的和行动的手段在体力动作之前完成智力行动,要考虑完成或反对这次行动理由等 等,而这一智力行动以制订一项决策而告终\
3.1 X(eo)=2xnJe-jon where x[n] is a real sequence. Therefore X(e)=Rl∑xnlo/。 ∑xR(-mu)=∑ x[n]cos(on),and xmm)=m∑刈nm∑刈mc-m)=-2 xn] sin(oon) Since cos(on)and sin(on)are, respectively, even and odd functions of o, Xre(eJo) is an even function of o