【单选题】Let x[n] be an absolutely summable signal with rational z-transform X[z].If X[z] is known to have a pole at Z=1/3, please determine the which statement is True. ( )
【单选题】Let x[n] be an absolutely summable signal with rational z-transform X[z].If X[z] is known to have a pole at Z=3, please determine the which statement is True. ( )
【简答题】Let {X i ,i=1,...,n} be n i.i.d. observation on X and let {Y i ,i=1,...,n} be the associated order statistics. (1)Show that . (2)Show that . (3)Show that