Program Mencari Akar Hampiran dengan Metode Secant Menggunakan Delphi 7

Pseudo Code:

var

  x0,x1,x2,y0,y1,y2,e,d,m,j:real;

  i,n:integer;

begin

  x0:=strtofloat(edit1.text);

  x1:=strtofloat(edit2.Text);

  e:=0.000001;

  d:=0.000001;

  i:=0;

  n:=strtoint(edit3.Text);

repeat

  i:=i+1;

  listbox1.Items.Add(inttostr(i));

  listbox2.Items.add(format('%8.4f',[x0]));

  listbox3.items.Add(format('%8.4f',[x1]));

  y0:=(cos(x0)-(x0*x0));

  y1:=(cos(x1)-(x1*x1));

  listbox5.Items.add(format('%8.4f',[y0]));

  listbox6.Items.add(format('%8.4f',[y1]));

  j:=abs(y1-y0);

  if j<d then showmessage ('terlalukecil');

  x2:=((x0*y1)-(x1*y0))/(y1-y0);

  listbox4.Items.add(format('%8.4f',[x2]));

  y2:=(cos(x2)-(x2*x2));

  m:=abs(y2);

  listbox7.Items.add(format('%8.6f',[y2]));

  x0:=x1;

  x1:=x2;

  if i=n then m:=e;

until

  m<e;

  edit4.Text:=format('%8.4f',[x2]);

end;

end.