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]
举一反三
- 设随机变量X和Y相互独立且X~N(0,1),Y~N(1,1),则( ). A: P{X + Y £ 0} = 1/2 B: P{X + Y £ 1} = 1/2 C: P{X - Y £ 0} = 1/2 D: P{X - Y £ 1} = 1/2
- 判断差分系统的因果性(1)y(n)=x(n+1)-x(n)(2)y(n)=x(n)-x(n-1)
- 随机变量X ~ N ( 0 , 1 ),Y ~ N ( 0 , 1 ),且相关系数[img=61x22]1803395efc2083a.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
- 随机变量X ~ N ( 0 , 1 ),Y ~ N ( 0 , 1 ),且相关系数[img=61x22]180390b1ffcc8de.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
- 随机变量X ~ N ( 0 , 1 ),Y ~ N ( 0 , 1 ),且相关系数[img=61x22]180387df0f4f1da.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
内容
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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
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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