diff ( y , x , 1 ) = arctan (0.1 * x + 0.2 ) ; ! Digits := 32; max_terms := 30; ! x_start := -1.0; x_end := -0.6 ; # # Trouble further # diff(y,0,exact_soln_y(x_start)); glob_look_poles := true; # # Not Given = 0 # Real = 1 # Complex = 2 # No Pole = 3 # Impossible Eq = 4 # glob_type_given_pole := 0; ! exact_soln_y := proc(x) return(10.0 * (0.1 * x + 0.2) * arctan(0.1 * x + 0.2) - 5.0 * ln(1.0 + expt((0.1 * x + 0.2) , 2))); end;