unit math2;

interface

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

type
  TForm1 = class(TForm)
    FuncGraph1: TFuncGraph;
    FuncGraph2: TFuncGraph;
    FuncGraph3: TFuncGraph;
    FuncGraph4: TFuncGraph;
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    Label4: TLabel;
    procedure FuncGraph1UserFunc(X: Real; var Y: Real);
    procedure FuncGraph2UserFunc(X: Real; var Y: Real);
    procedure FuncGraph3UserFunc(X: Real; var Y: Real);
    procedure FuncGraph4UserFunc(X: Real; var Y: Real);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.FuncGraph1UserFunc(X: Real; var Y: Real);
var
 Rads: Real;
begin
 Rads := X * (3.14159/180);
 Y := sin(Rads) * 100;
end;

procedure TForm1.FuncGraph2UserFunc(X: Real; var Y: Real);
var
 Rads: Real;
begin
 Rads := X * (3.14159/180);
 Y := cos(Rads) * 100;
end;



procedure TForm1.FuncGraph3UserFunc(X: Real; var Y: Real);
begin
 Y := X*X;
end;

procedure TForm1.FuncGraph4UserFunc(X: Real; var Y: Real);
begin
 Y := Random(100);
end;

end.