1- for the linear system : Sak y(n-k) = S br x(n-r) , (series a are from k=0 to n ) & ( series b from r=0 to m)
a- find H(z)
b- does this equation uniquely specify the unit sample response of l.s.i system ?
c- choose, stable and casual system ,discuss regions of convergaince (ROC)
2- find the convolution of : x1(n)(1/2)n u(-n-1) , x2=(1/2)n u(n
3- find convolution of : x1(n)=[1 2 3 0] , x2(n)=[1 -1 1 1] , n=[0 1 2 3]