Question

The residue command can also be used to form polynomials from a partial fraction expansion. The command [N,D] = residue(r.p.k) converts the partial fraction expansion rp,k (defines as before) back into the polynomial ratio B(s)/A(s). Given a partial fraction expansion roots of -6, -4, and -3; poles as -3, -2,-1, and direct term 2 use MATLAB residue command to determine the numerator and denominator polynomial coefficients given as n1 [Choose) n2 [Choose] n3 [Choose ] 6 2 10 -8 11 n4 1 d1 -2 -4 d2 4 5 -6 3 d3 [Choose] d4 [Choose

Answer 1

>> r = [-6 -4 -3]; >> p = [-3 -2 -1]; >> k = 2; >> [N, D] residue (r,p,k) N = 2 -1 -27 -30 D = 1 6 11 6

n1	2
n2	-1
n3	-27
n4	-30
d1	1
d2	6
d3	11
d4	6