diff ( y , x , 1 ) = tan ( x ) ; ! Digits := 32; max_terms := 20; ! x_start := 0.1; x_end := 1.5 ; diff(y,0,exact_soln_y(x_start)); glob_look_poles := true; glob_max_iter := 10000; glob_max_h := 0.5; # 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(-ln(cos(x))); end;