1. A discrete-time signal x[n] has z-transform X(z) = 8z2 – 2z – 1 Determine the z-transform V (z) of the following signals: (a) v[n] = x[n – 4]u[n – 4] (b) v[n] = cos(2n) x[n] (c) v[n] = e3nx[n] (d) v[n] = n²x[n] (e) v[n] = x[0] +x[1] + x[2] + •..+x[n]

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Star Delta Conversion

Find the input resistance between points A and B of the following resistive network: