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| + | <math>X_k[n] = \delta[n - k] \rightarrow Y_k[n] = (k + 1)^2 \delta[n - (k + 1)]</math> | ||
Revision as of 16:35, 11 September 2008
6 a) The system cannot be time-invariant.
$ X_k[n] = \delta[n - k] \rightarrow Y_k[n] = (k + 1)^2 \delta[n - (k + 1)] $
