Determine the z-transform of the following signals.(a) x(n) = n(-1)n u(n)(b) x(n) = n2u (n)(c) x(n) = -nanu(-n - 1)(d) x(n) = (-1)n (cosn/3n) u(n)(e) x(n) = (-1)nu(n)

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() x(n) = {1,0. -1, 0, 1, -1....}