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1. |
We_define_y[n]_=_nx[n]_‚Äö√Ñ√∂‚à ö√ë‚à ö¬®_(n-1)x[n]._Now,_z[n]_=_z[n-1]_+_y[n]._Is_z[n]_a_causal_system?$# |
A. | No |
B. | Yes |
Answer» C. | |