salgadoj3421 salgadoj3421 30-05-2023 Mathematics contestada 7.5 which of the following systems is (i) linear and (ii) timeinvariant? (a) y[n] = n x[n] (b) y[n] = x[n] 1 (c) y[n] 2y[n − 1] = 3x[n] nx[n − 1] (d) y[n] 2y[n − 1] = 3x[n] 4x[n − 1]