5: 
6: 
7: 
8: 
        2  2        3      2
       a *b *x - 4*x  + 4*y
q1 := -----------------------
                 4

9: 
{{x=arbcomplex(2),

                      2  2      2
     sqrt(x)*sqrt( - a *b  + 4*x )
  y=-------------------------------},
                   2

 {x=arbcomplex(1),

                         2  2      2
      - sqrt(x)*sqrt( - a *b  + 4*x )
  y=----------------------------------}}
                    2

10: 
Declare k operator ?  (Y or N)

?Type Y or N


Declare d_block operator ?  (Y or N)

?
