function cdot = ex74(r, c)
% 
% this file defines the particular and homogeneous solutions
%
delta_H = 53900; k = 0.3;

cdot(1) = c(2);
cdot(2) = -1.0/r*c(2) + delta_H/k;
cdot(3) = c(4);
cdot(4) = -1.0/r*c(4);
cdot(5) = c(6);
cdot(6) = -1.0/r*c(6);
cdot = cdot(:);
