9楼: Originally posted by jabile at 2013-12-22 17:55:13
和随机过程没啥关系，t服从均匀分布，两个随机变量函数的相关系数而已
Ex(t)=0=EY(t)
Dx(t)={1\over 2}x_0^2,DY(t)={1\over 2}y_0^2
Cov(X(t),Y(t))=Ex(t)Y(t)={1\over 2}x_0y_0
E={1\over 2}x_0y_0\cos (\ph ...

10楼: Originally posted by tim437126634 at 2013-12-22 18:39:40
{1\over 2}是什么意思...

10楼: Originally posted by tim437126634 at 2013-12-22 18:39:40
{1\over 2}是什么意思...

11楼: Originally posted by tim437126634 at 2013-12-22 18:57:40
您能用公式编辑器写一下吗，传张图呗，您这套符号系统表示理解不了。...

14楼: Originally posted by jabile at 2013-12-22 21:15:56
用不来，习惯tex了...

9楼: Originally posted by jabile at 2013-12-22 17:55:13
和随机过程没啥关系，t服从均匀分布，两个随机变量函数的相关系数而已
Ex(t)=0=EY(t)
Dx(t)={1\over 2}x_0^2,DY(t)={1\over 2}y_0^2
Cov(X(t),Y(t))=Ex(t)Y(t)={1\over 2}x_0y_0
E={1\over 2}x_0y_0\cos (\ph ...

16楼: Originally posted by math2000 at 2013-12-23 21:53:02
别误导楼主，哪有随机过程中时间t看成随机变量的。楼主明显没有说清楚题目。
一般的人一看就明白题目不对，这类题目通常是假设振幅是随机变量，或频率是随机变量。...

17楼: Originally posted by jabile at 2013-12-24 11:33:33
请问一下，原题中哪个地方说这是随机过程了？...

18楼: Originally posted by math2000 at 2013-12-25 19:54:29
不是随机过程，哪来的相关函数？没脑子...