• 2022-06-26
    任一个连续型的随机变量的概率密度为[img=34x25]18037105ab003f6.png[/img],则[img=34x25]18037105b3a8800.png[/img]必满足( )
    A: [img=100x25]18037105bbd4ac4.png[/img]
    B: 单调不减
    C: [img=115x50]18037105c486986.png[/img]
    D: [img=101x34]18037105ce0719f.png[/img]