FUNCTION :  GetaB - JAC-form of generalized eta function with initial
                    power of q
                

CALLING SEQUENCE : GetaB(g,d,n) 
                    

PARAMETERS :   d,g,n - positive integers

SYNOPSIS :   
  Returns 
  JAC(n*g,n*d,infinity)/JAC(0,n*d,infinity) 
  which JAC-form of generalized eta-function eta[d,h](n*tau) without
  the initial power of q

EXAMPLES :   

> with(ramarobinsids):
> with(thetaids): with(qseries):
> Geta(1,5,1);
                   (1/60)                    
                  q       JAC(1, 5, infinity)
                  ---------------------------
                      JAC(0, 5, infinity)    
> GetaB(1,5,1);
                      JAC(1, 5, infinity)
                      -------------------
                      JAC(0, 5, infinity)


DISCUSSION :

SEE ALSO :  

Geta