2.5-3. Use the residue method to find the z-transform of the following functions. Check your results by computer. 20 5 (a) E(s) = (b) E(s) = (s + 2)(s + 5) s(s+1) s+2 (c) E(s) = (d) E(s) = s(s1) s + 2 s²(s + 1) (e) E(s) = s² + 5s +6 s(s+4)(s+5) 2 (f) E(s) = s² + 2s + 5