• 2022-06-19
    设随机变量X的密度函数为[img=268x47]1803da15c7be5a0.png[/img],则Y=2X的密度函数是
    A: [img=81x47]1803da15d0f40b8.png[/img]
    B: [img=72x47]1803da15da233cf.png[/img]
    C: [img=72x47]1803da15e3f24b9.png[/img]
    D: [img=62x43]1803da15ece4d97.png[/img]