[SerginhoLD]

Код:

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, Math;

type
  TForm1 = class(TForm)
    Edit1: TEdit;
    Edit2: TEdit;
    Edit3: TEdit;
    Label1: TLabel;
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;
  x,y,z: double;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin
  x:=strtofloat(edit1.Text); y:=strtofloat(edit2.Text); z:=strtofloat(edit3.Text);
  label1.Caption:=floattostr(ln(power(y,sqrt(abs(x+1))*(-1)))*power(sin(ArcTan(z)),2));
end;

end.

x=1, y=2, z=3;
otvet: -0.882232...