| Line 1: | Line 1: | ||
| − | + | This is problem 10.21 (f) in O+W | |
| − | + | ||
| − | + | Determine z-transform of x[n]=(1/4)^n u[-n+3] | |
| − | + | ||
| − | + | X(z)=sigma x[n]z^(-n)=sigma (1/4)^(n)z^(-n)=sigma (1/4)^(-n)z^(n)=sigma (1/4)^(-n+3)z^(n-3)=(1/64)z^(-3)/(1-4z) | |
| − | + | =(1/64)z^(-4)/(1-(1/4)z^(-1)), |z|<1/4 | |
| − | + | ||
| − | + | Please place comments below. | |
| − | + | ||
| − | + | [[Back|Back to Final Exam Sp 2005 solutions, ECE301 Spring 2013]] | |
| − | + | ||
Latest revision as of 11:07, 3 May 2013
This is problem 10.21 (f) in O+W
Determine z-transform of x[n]=(1/4)^n u[-n+3]
X(z)=sigma x[n]z^(-n)=sigma (1/4)^(n)z^(-n)=sigma (1/4)^(-n)z^(n)=sigma (1/4)^(-n+3)z^(n-3)=(1/64)z^(-3)/(1-4z) =(1/64)z^(-4)/(1-(1/4)z^(-1)), |z|<1/4
Please place comments below.
