Ch2-9 分布函数的性质 口F(x)单调不减,即 Vx<x2,F(x)≤F(x2) 口0≤F(x)31且 lim F(r=l, lim F(x=0 x→+0 口F(x)右连续,即 F(x+0=lim F(t=F(x) t→>x+0Ch2-9 分布函数的性质 ❑ F ( x ) 单调不减，即 , ( ) ( ) 1 2 1 2  x  x F x  F x ❑ 0  F(x) 1 且 lim ( ) =1, lim ( ) = 0 →+ →− F x F x x x ❑ F ( x ) 右连续，即 ( 0) lim ( ) ( ) 0 F x F t F x t x + = = → +