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  For fixed z and a1=19/4, b1`>=-11/2
  For fixed z and a1=19/4, b1`=-11/2 For fixed z and a1=19/4, b1`=-9/2 For fixed z and a1=19/4, b1`=-7/2 For fixed z and a1=19/4, b1`=-5/2 For fixed z and a1=19/4, b1`=-3/2 For fixed z and a1=19/4, b1`=-1/2 For fixed z and a1=19/4, b1`=1/2 For fixed z and a1=19/4, b1`=3/2 For fixed z and a1=19/4, b1`=5/2 For fixed z and a1=19/4, b1`=7/2 For fixed z and a1=19/4, b1`=9/2 For fixed z and a1=19/4, b1`=11/2 |