有两个二元随机变量X和Y,它们的联合概率如下所示[img=173x87]17e2400bd4b7bbe.png[/img]并定义另一随机变量Z=XY(一般乘积，试计算:[tex=9.929x1.357]Ty1xqD+X4KMz7xk8DX6G3hPvbhEAnxqb2jwxhubMrMlfrsD2+A6eZFh1VJ+2mohofCakbKRpNFgYADzFOQSXtJwgNE6HkKjrUdkdo/o8I2EevdybGeX3LQ2g1wdPcwldUtkr+cuSEbfNEqTjRyLQqw==[/tex]
举一反三
- 有两个二元随机变量X和Y,它们的联合概率如下所示[img=173x87]17e2400bd4b7bbe.png[/img]并定义另一随机变量Z=XY(一般乘积，试计算:[tex=18.357x1.357]tTDy+LnpfZZ6eox/wTQlbOzzUgcBYug2ttRYVgMJ6NTP78Ejcj2QisQiGzBVJPma9L/EU3eJdGfSaFjXwenYhumOawpyu9yS1id+4UOR6va1+DWv4tjxdZeu3//oJ2HBn0DDKhUbhpg4kZWa9wHSVNfF9rIlXx8IM4c/Nznkjk5g8s57Hbp4G9pnVhUEx+/dI7xyZPuYQ9q5yFtJxxXNBg==[/tex][tex=10.214x1.357]Ty1xqD+X4KMz7xk8DX6G3hPvbhEAnxqb2jwxhubMrMlfrsD2+A6eZFh1VJ+2mohofCakbKRpNFgYADzFOQSXtJwgNE6HkKjrUdkdo/o8I2EevdybGeX3LQ2g1wdPcwldcRscqLp4VKIYc0QRf3YL6R20CZ4hB0Q/gc1bKqX5PCU=[/tex]
- 应用Matlab软件计算行列式[img=110x88]17da5d7b00219d6.png[/img]为( ). A: x^2 - 6*x^2*y^2 + 8*x*y^3 - 3*y^4 B: x^3 - 6*x^2*y^2 + 8*x*y^3 - 3*y^4 C: x^4 - 6*x^2*y^2 + 8*x*y^3 - 3*y^4 D: x^5- 6*x^2*y^2 + 8*x*y^3 - 3*y^4
- 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}
- 谱例的实际演奏顺序是（ ）[img=980x110]17da6e2f65f1335.png[/img] A: 1 2 3 4 3 4 5 6 7 8 B: 1 2 3 4 5 6 7 8 1 2 C: 1 2 3 4 5 6 7 8 3 4 D: 1 2 3 4 5 6 7 8 1 2 3 4 3 4
- 用某种方法排序，调整序列如下，所选排序方法为（ ）。7 4 2 8 1 0 6 30 4 2 8 1 7 6 30 1 2 8 4 7 6 30 1 2 8 4 7 6 30 1 2 3 4 7 6 80 1 2 3 4 7 6 80 1 2 3 4 6 7 80 1 2 3 4 6 7 8