diff ( y , x , 1 ) = sin ( x ) ; ! # Comment 1 Digits := 100; max_terms := 100; # Comment 2 ! # Comment 3 x_start := c(0.0); x_end := c(1.0); diff(y,0,exact_soln_y(x_start)); glob_look_poles := false; # Comment 4 # # Not Given = 0 # Real = 1 # Complex = 2 # No Pole = 3 # Impossible Eq = 4 # glob_type_given_pole := 3; ! # Comment 5 exact_soln_y := proc(x) # Comment 6 return(c(2.0) - cos(c(x))); # Comment 7 end;