%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%                                               %
%%  Definition av källtermen f(x) i ekvationen   %
%%                                               %
%%      -(a(x)*u'(x))' + c(x)*u(x) = f(x)        %
%%                                               %
%%  Variabler:  x        reellt tal              %
%%              source   reellt tal              % 
%%                                               %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

function source = f(x)

% Funktionen  f(x)
%
% Exempel:  source = (1 + x)*sin(x);

source = exp(x);
