ii and v only
1.20 Sketch the following DTsignals: +ul-31-lk-51-u (ii) x2[k] = Σ δ[k-m); m=0...
1.20 Sketch the following DTsignals: +ul-31-lk-51-u (ii) x2[k] = Σ δ[k-m); m=0 (ii) x3(k] (3-2 (iv) x4[k] =11 [cos(zk/8)]; (v) x5[k] = k11[A]; (vi) x6[k] = lkl («Ik + 4]-u[A-41).