• 2022-07-01
    假设随机变量X与Y的联合概率密度为‌[img=450x100]1802f2af4e51304.png[/img]‌则X的边缘概率密度[img=44x25]1802f2af5749ff4.png[/img] =( ).‌
    A: [img=264x98]1802f2af62cc410.png[/img]
    B: [img=262x98]1802f2af6d8eb12.png[/img]
    C: [img=256x101]1802f2af78dddea.png[/img]
    D: [img=263x95]1802f2af849f96c.png[/img]