diff ( y , x , 1 ) = y - 1.0; ! Digits := 32; max_terms := 30; ! x_start := 1.1; x_end := 5.0 ; diff(y,0,exact_soln_y(x_start)); glob_h := 0.01 ; glob_look_poles := true; glob_max_iter := 100; ! exact_soln_y := proc(x) return(1.0 + exp(x)); end;