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【简答题】
设随机变量X的概率密度为f(x)，且知有f(－x)=f(x)，又 设X的分布函数为F(x)，则=( )． (a) (b) (c) F(a) ( 设随机变量X的概率密度为f(x)，且有f(-x)=f(x)，又设X的分布函数为F(x)，则
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皮皮学刷刷变学霸
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