Source Code Metode Newton Cotes Open Formula
Posted on April 27th, 2007 in Programming, 216 views
Berikut ini merupakan source code metode newton cotes open formula yang saya buat dengan delphi.
procedure TForm1.Button1Click(Sender: TObject);
var
fx: 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+2);
for i:=1 to 7 do //nilai i tergantung banyaknya w[i]
begin
if i=1 then
begin
fx[i]:=a;
end
else
begin
if i=2 then
begin
c:=a;
end;
fx[i]:=c+h;
c:=fx[i];
end;
end;
w[1]:=0;
w[2]:=11;
w[3]:=-14;
w[4]:=26;
w[5]:=-14;
w[6]:=11;
w[7]:=0;
alpha:=6/20;
for i:=2 to 6 do //nilai i tergentung banyaknya w[i]
begin
y[i]:=w[i]*(1/(fx[i]-1));
jumlah:=jumlah+y[i];
end;
hasil:=(alpha*h)*jumlah;
edit4.Text:=floattostr(hasil);
end;
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