Differensiasi Numerik

Berikut adalah Kodingan dari Differensiasi Numerik

#include <iostream.h>

#include <conio.h>

#include <stdlib.h>

#include <stdio.h>

#include <math.h>

int pil1()

{

  float xo,hit1,hit2,h=0.2,fx,fxo,fh1,fh2;

  cout<<"TAKSIRAN 2 TITIK \n";

  cout<<"===================================\n";

  cout<<"Input Nilai Xo : ";cin>>xo;cout<<endl;

  hit1=xo+h;

  hit2=xo-h;

  fh1=1.79759 + (0.311423*hit1);

  fh2=1.79759 + (0.311423*hit2);

  fx=(fh1-fh2)/(2*h);

  fxo=0.311423-fx;

   

  cout<<"1.Perhitungan Metode Numerik : "<<fx<<"\n";

  cout<<"2.Perhitungan Metode Analitik : "<<"0.311423\n";

  cout<<"3.Eror : "<<fabs(fxo);

  cout<<endl;

  getch();

}

int pil2()

{

  float xo,hit1,hit2,h1=0.4,h2=0.2,fx,fxo,fh,fh1,fh2;

  cout<<"TAKSIRAN 3 TITIK \n";

  cout<<"===================================\n";

  cout<<"Input Nilai Xo : ";cin>>xo;cout<<endl;

  hit1=xo+h2;

  hit2=xo-h1;

  fh=1.79759 + (0.311423*xo);

  fh1=1.79759 + (0.311423*hit1);

  fh2=1.79759 + (0.311423*hit2);

  fx=(h1*h1*(fh1+((h2*h2)-((h1*h1)*fh))-(h2*h2)*fh2))/(h1*h2)*(h1+h2);

  fxo=0.311423-fx;

  cout<<"1.Perhitungan Metode Numerik : "<<fx<<"\n";

  cout<<"2.Perhitungan Metode Analitik : "<<"0.311423\n";

  cout<<"3.Eror : "<<fabs(fxo);

  cout<<endl;

  getch();

}

int pil3()

{

  float xo,hit1,hit2,hit3,hit4,h=0.2,fx,fxo,fh1,fh2,fh3,fh4;

  cout<<"TAKSIRAN 5 TITIK \n";

  cout<<"===================================\n";

  cout<<"Input Nilai Xo : ";cin>>xo;cout<<endl;

  hit1=xo+h;

  hit2=xo-h;

  hit3=xo-(2*h);

  hit4=xo+(2*h);

  fh1=1.79759 + (0.311423*hit1);

  fh2=1.79759 + (0.311423*hit2);

  fh3=1.79759 + (0.311423*hit3);

  fh4=1.79759 + (0.311423*hit4);

  fx=(fh3-(8*fh2)+(8*fh1)-fh4)/(12*h);

  fxo=0.311423-fx;

  cout<<"1.Perhitungan Metode Numerik : "<<fx<<"\n";

  cout<<"2.Perhitungan Metode Analitik : "<<"0.311423\n";

  cout<<"3.Eror : "<<fabs(fxo);

  cout<<endl;

  getch();

}

int main()

{

  int angka;char huruf;

  awal:

  cout<<"MENU DIFFERENSIASI NUMERIK :\n\n";

  cout<<"======================================\n";

  cout<<"1. TAKSIRAN 2 TITIK\n";

  cout<<"2. TAKSIRAN 3 TITIK\n";

  cout<<"3. TAKSIRAN 5 TITIK\n";

  cout<<"4. Keluar\n";

  cout<<"Silahkan Input Pilihan Anda [1-4] : ";cin>>angka;

  if (angka==1)

    {

      pil1();cout<<"\n";

      goto awal;

    }

  else if (angka==2)

    {

      pil2();cout<<"\n";

      goto awal;}

  else if (angka==3)

    {

      pil3();cout<<"\n";

      goto awal;

    }

  else

    {

      cout<<"Anda Yakin Akan Keluar Dari Program ? [Y/T] : ";cin>>huruf;cout<<endl;

      if (huruf=='Y' || huruf=='y')

         {

            cout<<"Semoga Bermanfaat dan Terima Kasih... (^_^)";exit(0);

         }

         else if (huruf=='T' || huruf=='t')

         {

         cout<<"\n";goto awal;

         }

    }

getch();

}