• 2022-10-24
    假设某个系统可以由如下的框图表示,则其输入输出关系为________。[img=389x128]1802eb9e0725973.png[/img]
    A: y[n] = p0x[n] – p1x[n-1] – d1y[n-1]
    B: y[n] = p0x[n] + p1x[n-1] – d1y[n-1]
    C: y[n] = p0x[n] – p1x[n+1] – d1y[n+1]
    D: y[n] = p0x[n] + p1x[n+1] – d1y[n+1]
  • B

    内容

    • 0

      ‏随机变量X ~ N ( 0 , 1 ),Y ~ N ( 1, 4 ),且相关系数[img=61x22]1802f2bde8cad19.png[/img],则( ).‏ A: P{ Y = -2X -1} = 1 B: P{ Y = 2X -1} = 1 C: P{ Y = -2X + 1} = 1 D: P{ Y = 2X + 1} = 1

    • 1

      随机变量X ~ N ( 0 , 1 ),Y ~ N ( 1, 4 ),且相关系数[img=61x22]1803c07c2f6d74e.png[/img],则( ). A: P{ Y = -2X -1} = 1 B: P{ Y = 2X -1} = 1 C: P{ Y = -2X + 1} = 1 D: P{ Y = 2X + 1} = 1

    • 2

      随机变量X ~ N ( 0 , 1 ),Y ~ N ( 1, 4 ),且相关系数[img=61x22]1802f2bc50655c0.png[/img],则( ). A: P{ Y = -2X -1} = 1 B: P{ Y = 2X -1} = 1 C: P{ Y = -2X + 1} = 1 D: P{ Y = 2X + 1} = 1

    • 3

      随机变量X ~ N ( 0 , 1 ),Y ~ N ( 1, 4 ),且相关系数[img=61x22]1803a74e43c340e.png[/img],则( ). A: P{ Y = -2X -1} = 1 B: P{ Y = 2X -1} = 1 C: P{ Y = -2X + 1} = 1 D: P{ Y = 2X + 1} = 1

    • 4

      设X~N(0,1),Y~N(1,1),且X与Y相互独立,则 A: P(X-Y≤0)=1 B: P(X+Y≤0)=1 C: P(X-Y≤1)=1/2 D: P(X+Y≤1)=1/2