diff ( y , x , 1 ) = sin ( x ) / cos ( x ) ; ! Digits := 32; max_terms := 30; ! x_start := 0.0; x_end := 1.5 ; diff(y,0,exact_soln_y(x_start)); glob_look_poles := true; glob_max_iter := 10000000; glob_display_interval := 0.1; glob_max_minutes := 10; glob_max_h := 0.001; # Not Given = 0 # No Pole = 3 # Pole = 4 glob_type_given_pole := 4; # Real Part array_given_rad_poles[1,1] := 1.570796327; # Imag Part array_given_rad_poles[1,2] := 0.0; # Order array_given_ord_poles[1,1] := 0.0; # Not Used array_given_ord_poles[1,2] := 0.0; ! exact_soln_y := proc(x) return(2.0 - ln(float_abs(cos(x)))); end;