function ab=sr_jacobi01(dig,N,a,b)
% SR_JACOBI01 Symbolic counterpart of r_jacobi01.m
%
digits(dig);
if nargin<3, a=0; end;  if nargin<4, b=a; end
if((N<=0)|(a<=-1)|(b<=-1)) error('parameter(s) out of range'), end
sa=vpa(a); sb=vpa(b);
cd=sr_jacobi(dig,N,a,b);
n=1:N;  ab(n,1)=(1+cd(n,1))./2; 
ab(1,2)=cd(1,2)/2^(sa+sb+1);
n=2:N;  ab(n,2)=cd(n,2)./4;
