设[tex=12.5x2.786]rxcf6Cu46Sv0UINdgbZ0JMKvTv46OSPL6kIw1QN6LR9Yae5uu4lYUDBtcvKgGV1vLAIbaqmOZfsyMF2GvURLrw==[/tex],求下列集合:[tex=5.571x1.357]V1Aklw+aQNoIGDmlThH38aJxu9EaXftJaLHKCMwBjm0=[/tex]
举一反三
- 设[tex=12.5x2.786]rxcf6Cu46Sv0UINdgbZ0JMKvTv46OSPL6kIw1QN6LR9Yae5uu4lYUDBtcvKgGV1vLAIbaqmOZfsyMF2GvURLrw==[/tex],求下列集合:[tex=4.143x1.357]G5IYQFKhCvQVtMeD7nJLag==[/tex]
- 设二维离散随机变量[tex=2.5x1.357]PWg5V4GQQafckGNgbx6gmw==[/tex]的可能值为(0, 0),(−1, 1),(−1, 2),(1, 0),且取这些值的概率依次为1/6, 1/3, 1/12, 5/12,试求[tex=0.857x1.0]N7iCrOsS+NNEUUlnsYCi1g==[/tex]与[tex=0.643x1.0]O+viFNA0oHTwnBtQyi80Zw==[/tex] 各自的边际分布列.
- 设二维随机变量(X,Y)的联合分布列为 XY -1 0 1 -1 1 1/6 1/9 2/9 1/3 0 1/6则P{XY=1}为( ) A: 0 B: 1/6 C: 1/3 D: 2/3
- >>>x= [10, 6, 0, 1, 7, 4, 3, 2, 8, 5, 9]>>>print(x.sort()) 语句运行结果正确的是( )。 A: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10] B: [10, 6, 0, 1, 7, 4, 3, 2, 8, 5, 9] C: [10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0] D: ['2', '4', '0', '6', '10', '7', '8', '3', '9', '1', '5']
- set1 = {x for x in range(10)} print(set1) 以上代码的运行结果为? A: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} B: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10} C: {1, 2, 3, 4, 5, 6, 7, 8, 9} D: {1, 2, 3, 4, 5, 6, 7, 8, 9,10}