Source Code Metode Newton Cotes Close Formula
Posted on April 27th, 2007 in Programming, 213 views
Berikut ini merupakan source code metode newton cotes close formula yang saya buat dengan delphi.
procedure TForm1.Button1Click(Sender: TObject);
var
x: array [1..10] of real;
w: array [1..10] of real;
y: array [1..10] of real;
i,n: integer;
a,b,jumlah,h,c,alpha,hasil: real;
begin
a:=strtofloat(edit2.text);
b:=strtofloat(edit1.text);
n:=strtoint(edit3.text);
jumlah:=0;
c:=0;
h:=(b-a)/n;
for i:=1 to 5 do //nilai i tergantung banyaknya w[i]
begin
if i=1 then
begin
x[i]:=a;
end
else
begin
if i=2 then
begin
c:=a;
end;
x[i]:=c+h;
c:=x[i];
end;
end;
w[1]:=7;
w[2]:=32;
w[3]:=12;
w[4]:=32;
w[5]:=7;
alpha:=2/45;
for i:=1 to 5 do //nilai i tergentung banyaknya w[i]
begin
y[i]:=w[i]*(x[i]*x[i]);
jumlah:=jumlah+y[i];
end;
hasil:=(alpha*h)*jumlah;
edit4.Text:=floattostr(hasil);
end;
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