• 2022-06-16
    改变[img=151x53]1803d3413dd22d5.png[/img]的积分顺序为( )
    A: [img=114x53]1803d3414b50673.png[/img]
    B: [img=163x53]1803d34155abee7.png[/img]
    C: [img=163x53]1803d341607049b.png[/img]
    D: [img=162x54]1803d3416af6e6f.png[/img]
  • C

    举一反三

    内容

    • 0

      设随机变量X的分布律为P(X=i)=i/6,i=1,2,3,记Y=max(X,2),则Y的分布函数F(x)=( ). A: [img=134x97]18032ce5f620d8f.png[/img] B: [img=134x97]18032ce5ffc4209.png[/img] C: [img=134x97]18032ce60b3653b.png[/img] D: [img=134x97]18032ce61742a1c.png[/img] E: [img=106x51]18032ce62052d87.png[/img]

    • 1

      f(x)在x处可导,a,b为常数,则[img=27x32]1802fa0c04c2042.png[/img][img=234x25]1802fa0c10631ae.png[/img]= A: [img=93x26]1802fa0c195a7ad.png[/img] B: [img=93x26]1802fa0c2233a71.png[/img] C: [img=39x26]1802fa0c2adc024.png[/img] D: f(x)

    • 2

      ‍设随机变量X的密度函数为f(x),分布函数为F(x),f(x)关于y轴对称,则有( )‎ A: [img=140x25]1803da31a560693.png[/img] B: [img=154x25]1803da31adcabd7.png[/img] C: [img=109x25]1803da31b6af422.png[/img] D: [img=149x25]1803da31bffb06d.png[/img]

    • 3

      设随机变量X的密度函数为f(x),分布函数为F(x),f(x)关于y轴对称,则有( ) A: [img=140x25]180357420e61492.png[/img] B: [img=154x25]1803574216b080f.png[/img] C: [img=109x25]180357421f04a55.png[/img] D: [img=149x25]1803574227a6825.png[/img]

    • 4

      下列函数中为同一个函数的是() 未知类型:{'options': ['f(x)=x,g(x)=[img=25x39]17e43f7e294a229.png[/img]', ' f(x)=x,g(x)=[img=39x24]17e43f7e31cdea3.jpg[/img]', ' f(x)=x,g(x)=[img=35x25]17e43f7e3c419e9.png[/img]', ' f(x)=|x|,g(x)=[img=35x25]17e43f7e3c419e9.png[/img]'], 'type': 102}