| 
  
  
  For fixed z and a1=-5/4, b1`>=-11/2
  
 For fixed z and a1=-5/4, b1`=-11/2 
 For fixed z and a1=-5/4, b1`=-9/2 
 For fixed z and a1=-5/4, b1`=-7/2 
 For fixed z and a1=-5/4, b1`=-5/2 
 For fixed z and a1=-5/4, b1`=-3/2 
 For fixed z and a1=-5/4, b1`=-1/2 
 For fixed z and a1=-5/4, b1`=1/2 
 For fixed z and a1=-5/4, b1`=3/2 
 For fixed z and a1=-5/4, b1`=5/2 
 For fixed z and a1=-5/4, b1`=7/2 
 For fixed z and a1=-5/4, b1`=9/2 
 For fixed z and a1=-5/4, b1`=11/2 
   |