• 2022-06-09
    设随机变量X的密度函数为[img=268x47]1803da1105107b1.png[/img],则Y=2X的密度函数是
    A: [img=81x47]1803da110d82165.png[/img]
    B: [img=72x47]1803da11162d242.png[/img]
    C: [img=72x47]1803da111eb4590.png[/img]
    D: [img=62x43]1803da1127f2639.png[/img]