signals and systems
How to solve if coefficients are:
A= -2
B = 1
C = 2
Y(z)=-2z/(z-1)+z/(z+1/2)+2z/(z-2)
(i) system is causal for x(n)=2^n u(n)
ROC : |z|>2
y(n)=-2*u(n)+(-1/2)n u(n)+2(2)nu(n)
(ii) system is stable , x(n)=2*u(-n-1)
input is anticausal,
System is stable means ROC contains the unit circle,
Hence ROC |z|<2
Y(n)=2u(-n-1)-(-1/2)n u(-n-1)-2(2)nu(-n-1)
(iii) causal and stable ,ROC of input is |z|<1
y(n)=(-1/2)u(n)
signals and systems How to solve if coefficients are: A= -2 B = 1 C =...
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