Program Menghitung GLB (Gerak Lurus Beraturan) (DevC++)

Program Menghitung GLB (Gerak Lurus Beraturan) (DevC++)

#include <iostream>

using namespace std;

int waktu (int s,int v)

{

 int hasil;

 hasil = s / v;

 return hasil;

}

int main()

{

 int s,v,hasil;

 cout <<"MENENTUKAN WAKTU TEMPUH KENDARAAN"<<endl;

 cout <<"Masukkan nilai jarak : ";

 cin >> s;

 cout <<"Masukkan nilai kecepatan : ";

 cin >> v;

 hasil=waktu(s,v);

 cout <<"Hasil waktu tempuh = "<<hasil<<endl;

 cout << " " << endl ;

 cout << "----------Selamat Menggunakan Program Ini-------------" << endl;

 cout << "----------------Semoga bermanfaat-------------";

 return 0;

}

Hasil Compile

Program Menghitung GLBB (Gerak Lurus Berubah Beraturan) (DevC++)

Program Menghitung GLBB (Gerak Lurus Berubah Beraturan) (DevC++)

#include <iostream>

using namespace std;

float waktu (float vo,float vt,float a)

{

 float hasil;

 hasil = vt / (vo + a);

 return hasil;

}

int main()

{

 float vo,vt,a,hasil;

 cout <<"MENENTUKAN WAKTU TEMPUH KENDARAAN"<<endl;

 cout <<"Masukkan kecepatan awal : ";

 cin >> vo;

 cout <<"Masukkan kecepatan akhir : ";

 cin >> vt;

 cout <<"Masukkan percepatan : ";

 cin >> a;

 hasil=waktu(vo,vt,a);

 cout <<"Hasil waktu tempuh = "<<hasil<<endl;

 cout << " " << endl ;

 cout << "----------Selamat Mencoba Program Ini-------------" << endl;

 cout << "---------------Semoga bermanfaat-------------";

 return 0;

}

Hasil Compile

Program Mencari Bilangan Positif dan Negatif ( Dev C++ )

Program Mencari Bilangan Positif dan Negatif ( Dev C++ )

#include<iostream>

using namespace std;

int main ()

{int x;

cout<<"monggo masukan bilangan bulat : " ;cin>>x;

if (x<0)

cout<<"itu Bilangan Negatif broo";

if (x>0)

cout<<"itu Bilangan Positif broo";

}

Hasil Compile 

Program Mencari Nilai Daya Listrik ( Dev C++ )

Program Mencari Nilai Daya Listrik ( Dev C++ )

#include <iostream>

#include <conio.h>

#include <stdio.h>

using namespace std;

int main(void )

{

float vs,r1,r2,r3,i1,i2,i3,pr1,pr2,pr3,i,rt,hubungan;

char mengulang;

do

{

cout<<"masukan nilai vs=";cin>>vs;

cout<<"masukan nilai r1=";cin>>r1;

cout<<"masukan nilai r2=";cin>>r2;

cout<<"masukan nilai r3=";cin>>r3;

do

{

cout<<"masukan hubungan r"<<endl;

cout<<"1.seri"<<endl<<"2.paralel"<<endl;

cout<<endl<<"apa hubungannya=>";cin>>hubungan;

if (hubungan==1)

{

rt=r1+r2+r3;

i=vs/rt;

i1=i2=i3=i;

pr1=i*i*r1;

pr2=i*i*r2;

pr3=i*i*r3;

}

else if(hubungan==2)

{

i1=vs/r1;

i2=vs/r2;

i3=vs/r3;

pr1=i1*i1*r1;

pr2=i2*i2*r2;

pr3=i3*i3*r3;

}

else

cout<<endl<<"maaf hubungan anda terlarang"<<endl<<"press any key";

getch();

cout<<"i1="<<i1<<endl;

cout<<"i2="<<i2<<endl;

cout<<"i3="<<i3<<endl;

cout<<"pr1="<<pr1<<endl;

cout<<"pr2="<<pr2<<endl;

cout<<"pr3="<<pr3<<endl;

}while(hubungan<1|hubungan>2);

cout<<"anda mau mengulang (Y/T)";cin>>mengulang;

}while(mengulang=='y');

cout<<"terima kasihku untukmu";

getch();

}

Hasil Compile

Metode Numerik ( Dev C++ )

Metode Numerik ( Dev C++ )

#include <cstdlib>

#include <iostream>

#include <math.h>

#include<conio.h>

#include <stdlib.h>

#include <Windows.h>

#include<iomanip>

using namespace std;

void head(){ 

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

cout<<"\n QUIZ METODE NUMERIK";

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

cout<<"\n Agri Kuswandani";

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

}

void RegresiLinier(int n);

void RegresiNonLinier(int n);

void AnalisisRegresiPolinomial(int n);

void SistemPersLinier(int n);

int main()

{

char pil,plh;

int n;

system("cls");

head();

cout<<"\n Masukkan Jumlah Data yang akan diinputkan : ";cin>>n;

cout<<"\n [ 1 ] Metode Regresi Linier\n"

" [ 2 ] Metode Regresi Non Linier\n"

" [ 3 ] Analisis Regresi Polinomial\n"

" [ 4 ] Sistem Persamaan Linier\n"

" [ 0 ] Exit\n"

  "\n Silahkan Pilih Metode Yang digunakan : ";cin>>pil;

switch(pil){

case '1':

system("cls");

RegresiLinier(n);

break;

case '2':system("cls");RegresiNonLinier(n);

break;

case '3':AnalisisRegresiPolinomial(n);

break;

case '4':SistemPersLinier(n);

break;

case '0':

exit(0);

break;

  }

system("pause");

return 0;

}

void RegresiLinier(int q){

system("cls");

long jumx=0,jumy=0,jumxy=0,jumxx=0,xy=0,xx=0,X,Y;

int n=q;

long ratx,raty,a,b;

float x[100],y[100];

cout<<"\n -------------";

cout<<"\n Input Data";

cout<<"\n -------------";

for (int h=1;h<=n;h++){

cout<<"\nNilai x"<<h<<" = ";cin>>x[h];

}cout<<"\n\n -------------";

for(int k=1;k<=n;k++){

cout<<"\nNilai y"<<k<<" = ";cin>>y[k];

}

system("cls");

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

cout<<"\n | Data ke  |   X   |      Y      |       XY      |       X^2      |";

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

for(int i=1;i<=n;i++){

jumx=jumx+x[i];

jumy=jumy+y[i];

xy=(x[i]*y[i]);

xx=(x[i]*x[i]);

jumxy=jumxy+xy;

jumxx=jumxx+xx;

cout<<"  "<<setiosflags(ios::left)<<setw(13)<<i;

cout<<setiosflags(ios::left)<<setw(11)<<x[i];

cout<<setiosflags(ios::left)<<setw(16)<<y[i];

cout<<setiosflags(ios::left)<<setw(16)<<xy;

cout<<setiosflags(ios::left)<<setw(11)<<xx;

cout<<"\n\n";

}

cout<<" -------------------------------------------------------------------\n";

cout<<"  "<<setiosflags(ios::left)<<setw(13)<<"JUMLAH";

cout<<setiosflags(ios::left)<<setw(11)<<jumx;

cout<<setiosflags(ios::left)<<setw(16)<<jumy;

cout<<setiosflags(ios::left)<<setw(16)<<jumxy;

cout<<setiosflags(ios::left)<<setw(11)<<jumxx;

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

ratx=jumx/n;

raty=jumy/n;

b=((jumxy*n)-(jumx*jumy))/((jumxx*n)-(jumx*jumx));

a=raty-(b*ratx);

cout<<"\n Nilai Rata - Rata x = "<<ratx;

cout<<"\n Nilai Rata -  Rata y = "<<raty;

cout<<"\n Nilai b = "<<b;

cout<<"\n Nilai a = "<<a;

cout<<"\n\n Jadi Persamaanya adalah Y = "<<a<<" + "<<b<<" X";

cout<<"\n\n Masukkan Nilai taksiran untuk X = ";cin>>X;

Y=a+(b*X);

cout<<"\n untuk Taksiran x="<<X<<", maka nilai Y = "<<Y;

getch();main();

}

void RegresiNonLinier(int q){

system("cls");

int n=q;

float x[100],y[100];

float qi=0,pi=0,qipi=0,qi2=0,jumpi=0,jumqi=0,jumqipi=0,jumqiqi=0;

float ratqi,ratpi,B,A,P,a,b;

/*  ---------------Tranformasi Dengan log --------------------------*/

cout<<"\n -------------";

cout<<"\n Input Data";

cout<<"\n -------------";

for (int h=1;h<=n;h++){

cout<<"\nNilai x"<<h<<" = ";cin>>x[h];

}cout<<"\n\n -------------";

for(int k=1;k<=n;k++){

cout<<"\nNilai y"<<k<<" = ";cin>>y[k];

}

system("cls");

cout<<"\n =====================Tabel Penolong Dengan Log =====================";

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

cout<<" "<<setiosflags(ios::left)<<setw(9)<<" No."<<setw(7)<<" xi "<<setw(7)<<" yi";

cout<<setiosflags(ios::left)<<setw(12)<<"qi=log xi"<<setw(12)<<"pi=log yi"<<setw(12)<<"qi.pi";

cout<<setiosflags(ios::left)<<setw(12)<<"qi^2";

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

for(int i=1;i<=n;i++){

qi=log10(x[i]);

pi=log10(y[i]);

qipi=(qi*pi);

qi2=(qi*qi);

jumpi=jumpi+pi;

jumqi=jumqi+qi;

jumqipi=jumqipi+qipi;

jumqiqi=jumqiqi+qi2;

cout<<" "<<setiosflags(ios::left)<<setw(9)<<i;

cout<<setiosflags(ios::left)<<setw(7)<<x[i];

cout<<setiosflags(ios::left)<<setw(7)<<y[i];

cout<<setiosflags(ios::left)<<setw(12)<<qi;

cout<<setiosflags(ios::left)<<setw(12)<<pi;

cout<<setiosflags(ios::left)<<setw(12)<<qipi;

cout<<setiosflags(ios::left)<<setw(12)<<qi2;

cout<<"\n\n";

}

cout<<" -------------------------------------------------------------------\n";

cout<<"  "<<setiosflags(ios::left)<<setw(22)<<"JUMLAH";

cout<<setiosflags(ios::left)<<setw(12)<<jumqi;

cout<<setiosflags(ios::left)<<setw(12)<<jumpi;

cout<<setiosflags(ios::left)<<setw(12)<<jumqipi;

cout<<setiosflags(ios::left)<<setw(12)<<jumqiqi;

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

ratqi=jumqi/n;

ratpi=jumpi/n;

B=((n*jumqipi)-(jumqi*jumpi))/((n*jumqiqi)-(jumqi*jumqi));

A=ratpi-(B*ratqi);

cout<<"\n\n Nilai Rata-rata qi : "<<ratqi;

cout<<"\n Nilai Rata-rata pi : "<<ratpi;

cout<<"\n Nilai B : "<<B;

cout<<"\n Nilai A : "<<A;

cout<<"\n Jadi Persamaan Transformasi Log-nya adalah : ";

cout<<A<<" + "<<B<<" q\n";

cout<<"\n Karena A log a ----> "<<A<<" = log a\n";

a=pow(10,A);

b=B;

cout<<"\n Maka Nilai a : "<<a;

cout<<"\n Maka Persamaan yang dicari adalah : \n";

cout<<"\n y = "<<a<<" X^"<<b<<endl;

/*  ---------------Tranformasi Dengan ln --------------------------*/

float fqi=0,fpi=0,fqipi=0,fqi2=0,fjumpi=0,fjumqi=0,fjumqipi=0,fjumqiqi=0;

float fratqi,fratpi,fB,fA,fP,fa,fb;

cout<<"\n\n";

cout<<"\n =====================Tabel Penolong Dengan Ln =====================";

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

cout<<" "<<setiosflags(ios::left)<<setw(9)<<" No."<<setw(7)<<" xi "<<setw(7)<<" yi";

cout<<setiosflags(ios::left)<<setw(12)<<"qi=xi"<<setw(12)<<"pi=ln yi"<<setw(12)<<"qi.pi";

cout<<setiosflags(ios::left)<<setw(12)<<"qi^2";

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

for(int i=1;i<=n;i++){

fqi=(x[i]);

fpi=logf(y[i]);

fqipi=(fqi*fpi);

fqi2=(fqi*fqi);

fjumpi=fjumpi+fpi;

fjumqi=fjumqi+fqi;

fjumqipi=fjumqipi+fqipi;

fjumqiqi=fjumqiqi+fqi2;

cout<<" "<<setiosflags(ios::left)<<setw(9)<<i;

cout<<setiosflags(ios::left)<<setw(7)<<x[i];

cout<<setiosflags(ios::left)<<setw(7)<<y[i];

cout<<setiosflags(ios::left)<<setw(12)<<fqi;

cout<<setiosflags(ios::left)<<setw(12)<<fpi;

cout<<setiosflags(ios::left)<<setw(12)<<fqipi;

cout<<setiosflags(ios::left)<<setw(12)<<fqi2;

cout<<"\n\n";

}

cout<<" -------------------------------------------------------------------\n";

cout<<"  "<<setiosflags(ios::left)<<setw(22)<<"JUMLAH";

cout<<setiosflags(ios::left)<<setw(12)<<fjumqi;

cout<<setiosflags(ios::left)<<setw(12)<<fjumpi;

cout<<setiosflags(ios::left)<<setw(12)<<fjumqipi;

cout<<setiosflags(ios::left)<<setw(12)<<fjumqiqi;

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

fratqi=fjumqi/n;

fratpi=fjumpi/n;

B=((n*fjumqipi)-(fjumqi*fjumpi))/((n*fjumqiqi)-(fjumqi*fjumqi));

fA=fratpi-(fB*fratqi);

cout<<"\n\n Nilai Rata-rata qi : "<<fratqi;

cout<<"\n Nilai Rata-rata pi : "<<fratpi;

cout<<"\n Nilai B : "<<fB;

cout<<"\n Nilai A : "<<fA;

cout<<"\n Jadi Persamaan Transformasi Log-nya adalah : ";

cout<<fA<<" + "<<fB<<" q\n";

cout<<"\n Karena A= ln a ----> "<<fA<<" = ln a\n";

fa=pow(10,A);

fb=fB;

cout<<"\n Maka Nilai a : "<<fa;

cout<<"\n Maka Persamaan yang dicari adalah : \n";

cout<<"\n y = "<<fa<<" X^"<<fb<<endl;

getch();main();

}

void AnalisisRegresiPolinomial(int q){

system("cls");

float jumx=0,jumy=0,jumxy=0,jumxx=0,jumxxx=0,jumxxxx=0,jumx2y=0,xy=0,xx=0,X,Y,xxx=0,xxxx=0,x2y=0;

float ratx,raty,a,b;float L[3][3],U[3][3];float A[3][3];float B[3][3];

float y0=0,y1=0,y2=0,a0=0,a1=0,a2=0;

int n=q;

float x[100],y[100];

cout<<"\n -------------";

cout<<"\n Input Data";

cout<<"\n -------------";

for (int h=1;h<=n;h++){

cout<<"\nNilai x"<<h<<" = ";cin>>x[h];

}cout<<"\n\n -------------";

for(int k=1;k<=n;k++){

cout<<"\nNilai y"<<k<<" = ";cin>>y[k];

}

system("cls");

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

  "===========================\n";

cout<<" "<<setiosflags(ios::left)<<setw(13)<<" Data ke-"<<setw(12)<<" x "<<setw(12)<<" y";

cout<<setiosflags(ios::left)<<setw(12)<<"xi^2"<<setw(12)<<" xi^3 "<<setw(12)<<"xi^4";

cout<<setiosflags(ios::left)<<setw(12)<<"xiyi"<<setw(12)<<" xi^2yi ";

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

  "===========================\n";

for(int i=1;i<=n;i++){

jumx=jumx+x[i];

jumy=jumy+y[i];

xy=(x[i]*y[i]);

xx=(x[i]*x[i]);

xxx=(x[i]*x[i]*x[i]);

xxxx=(x[i]*x[i]*x[i]*x[i]);

 x2y=(xx*y[i]);

jumxy=jumxy+xy;

jumxx=jumxx+xx;

jumxxx=jumxxx+xxx;

jumxxxx=jumxxxx+xxxx;

 jumx2y=jumx2y+x2y;

cout<<"  "<<setiosflags(ios::left)<<setw(13)<<i;

cout<<setiosflags(ios::left)<<setw(12)<<x[i];

cout<<setiosflags(ios::left)<<setw(12)<<y[i];

cout<<setiosflags(ios::left)<<setw(12)<<xx;

cout<<setiosflags(ios::left)<<setw(12)<<xxx;

cout<<setiosflags(ios::left)<<setw(12)<<xxxx;

cout<<setiosflags(ios::left)<<setw(12)<<xy;

cout<<setiosflags(ios::left)<<setw(12)<<x2y;

cout<<"\n\n";

}

cout<<" ---------------------------------------------------------------------"

  "-------------------------\n";

cout<<"  "<<setiosflags(ios::left)<<setw(13)<<"Jumlah";

cout<<setiosflags(ios::left)<<setw(12)<<jumx;

cout<<setiosflags(ios::left)<<setw(12)<<jumy;

cout<<setiosflags(ios::left)<<setw(12)<<jumxx;

cout<<setiosflags(ios::left)<<setw(12)<<jumxxx;

cout<<setiosflags(ios::left)<<setw(12)<<jumxxxx;

cout<<setiosflags(ios::left)<<setw(12)<<jumxy;

cout<<setiosflags(ios::left)<<setw(12)<<jumx2y;

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

  "===========================\n";

cout<<"\n\n Sistem Persamaan Sebagai berikut : \n";

cout<<"a0 + "<<jumx<<"a1 + "<<jumxx<<"a2 = "<<jumy<<endl;

cout<<jumx<<"a0 + "<<jumxx<<"a1 + "<<jumxxx<<"a2 = "<<jumxy<<endl;

cout<<jumxx<<"a0 + "<<jumxxxx<<"a1 + "<<jumxxxx<<"a2 = "<<jumx2y<<endl;

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

  "===========================\n";

cout<<"\n ==========METODE LU============";

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

  "===========================\n";

//-------Metode LU----------//

A[1][1]=n;A[1][2]=jumx;A[1][3]=jumxx;

A[2][1]=jumx;A[2][2]=jumxx;A[2][3]=jumxxx;

A[3][1]=jumxx;A[3][2]=jumxxx;A[3][3]=jumxxxx;

// mencari nilai Lii=Aii untuk i=1,2,3

L[1][1]=A[1][1];

L[2][1]=A[2][1];

L[3][1]=A[3][1];

U[1][2]=A[1][2]/L[1][1];

U[1][3]=A[1][3]/L[1][1];

L[2][2]=A[2][2]-(L[2][1]*U[1][2]);

L[3][2]=A[3][2]-(L[3][1]*U[1][2]);

U[2][3]=(A[2][3]-(L[2][1]*U[1][3]))/L[2][2];

L[3][3]=A[3][3]-((L[3][1]*U[1][3])-(L[3][2]*U[2][3]));

L[1][2]=0;L[1][3]=0;L[2][3]=0;

U[1][1]=1;U[2][2]=1;U[3][3]=U[2][2];

U[2][1]=0;U[3][1]=0;U[3][2]=0;

B[1][1]=jumx;B[1][2]=0;B[1][3]=0;

B[2][1]=jumxy;B[2][2]=0;B[2][3]=0;

B[3][1]=jumx2y;B[3][2]=0;B[3][3]=B[1][2];

cout<<"\n\n Matrik A : \n";

for (int i=1;i<=3;i++){

for(int j=1;j<=3;j++){

cout<<setiosflags(ios::right)<<setw(12)<<A[i][j];}

cout<<endl;}

cout<<"\n\n Matrik L : \n";

for (int i=1;i<=3;i++){

for(int j=1;j<=3;j++){

cout<<setiosflags(ios::right)<<setw(12)<<L[i][j];}

cout<<endl;}

cout<<"\n\n Matrik U : \n";

for (int i=1;i<=3;i++){

for(int j=1;j<=3;j++){

cout<<setiosflags(ios::right)<<setw(12)<<U[i][j];}

cout<<endl;}

cout<<"\n\n A=LU\n"

" Ax = b\n"

" LUx = b\n";

cout<<"\n\n Jadi Diadapat Persamaan.\n";

cout<<" "<<L[1][1]<<" y0 = "<<B[1][1];

cout<<"\n "<<L[2][1]<<" y0 + "<<L[2][2]<<" y1 = "<<B[2][1];

cout<<"\n "<<L[3][1]<<" y0 + "<<L[3][2]<<" y1 + "<<L[3][3]<<" = "<<B[3][1]<<endl;

y0=B[1][1]/L[1][1];

y1=(B[2][1]-(L[2][1]*y0))/L[2][2];

y2=(B[3][1]-((L[3][1]*y0)+(L[3][2]*y1)))/L[3][3];

cout<<"\n\n Jadi Diadapat Persamaan.\n";

cout<<"\n "<<U[1][1]<<" a0 + "<<U[1][2]<<" a1 + "<<U[1][3]<<" a2 = "<<y0;

cout<<"\n "<<U[2][2]<<" a1 + "<<U[2][3]<<" a2 = "<<y1;

cout<<"\n "<<U[3][3]<<" a2 = "<<y2<<endl;

a2=y2;

a1=(y1-(U[2][3]*a2))/U[2][2];

a0=(y0-(U[1][2]*a1)+(U[1][3]*a2))/U[1][1];

cout<<"\n\n Semua nilai a0,a1,a2 ke persamaan garis kurva.\n";

cout<<"\n E(i)^2 = (y-a0 -a1xi -a2xi^2)\n";

cout<<"\n = Y - "<<a0<<"- "<<a1<<"xi - "<<a2<<"xi^2"<<endl;

cout<<"\n Y = "<<a0<<" + "<<a1<<"x + "<<a2<<"x^2"<<endl;

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

  "===========================\n";

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

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

  "===========================\n";

///metode Eliminasi---

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

cout<<n<<"a0 + "<<jumx<<"a1 + "<<jumxx<<"a2 = "<<jumy<<" ------------(1)\n";

cout<<jumx<<"a0 + "<<jumxx<<"a1 + "<<jumxxx<<"a2 = "<<jumxy<<" ------------(2)\n";

cout<<jumxx<<"a0 + "<<jumxxxx<<"a1 + "<<jumxxxx<<"a2 = "<<jumx2y<<" ------------(3)\n";

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

cout<<"\n Eliminasi Pers. 1 dan 2\n";

cout<<n<<"a0 + "<<jumx<<"a1 + "<<jumxx<<"a2 = "<<jumy<<endl;

cout<<jumx<<"a0 + "<<jumxx<<"a1 + "<<jumxxx<<"a2 = "<<jumxy<<endl;

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

float fa[10],fb[10],fc[10],fd[10],ha[5],hb[5],hc[5],hd[5];

fa[1]=n;fb[1]=jumx;fc[1]=jumxx;fd[1]=jumy;

fa[2]=jumx;fb[2]=jumxx;fc[2]=jumxxx;fd[2]=jumxy;

fa[3]=jumxx;fb[3]=jumxxx;fc[3]=jumxxxx;fd[3]=jumxy;

///eliminasi pers.1 dan 2

ha[1]=fa[1]*fa[2];

hb[1]=fb[1]*fa[2];

hc[1]=fc[1]*fa[2];

hd[1]=fd[1]*fa[2];

ha[2]=fa[2]*fa[1];

hb[2]=fb[2]*fa[1];

hc[2]=fc[2]*fa[1];

hd[2]=fd[2]*fa[1];

ha[3]=ha[1]-ha[2];//pers.4--->udah nilai 0

hb[3]=hb[1]-hb[2];

hc[3]=hc[1]-hc[2];

hd[3]=hd[1]-hd[2];

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

cout<<"\n Persamaan 4\n";

cout<<"   *"<<ha[3]<<" a0 + "<<hb[3]<<" a1 + "<<hc[3]<<" a2 = "<<hd[3]<<endl;

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

//eliminasi pers.1.dan pers.3

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

cout<<"\n Eliminasi Pers. 1 dan 3\n";

cout<<fa[1]<<" a0 + "<<fb[1]<<" a1 + "<<fc[1]<<" a2 = "<<fd[1]<<endl;

cout<<fa[3]<<" a0 + "<<fb[3]<<" a1 + "<<fc[3]<<" a2 = "<<fd[3]<<endl;

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

ha[4]=fa[1]*fa[3];

hb[4]=fb[1]*fa[3];

hc[4]=fc[1]*fa[3];

hd[4]=fd[1]*fa[3];

ha[5]=fa[3]*fa[1];

hb[5]=fb[3]*fa[1];

hc[5]=fc[3]*fa[1];

hd[5]=fd[3]*fa[1];

fa[4]=ha[4]-ha[5];//pers.5---->udah nilai 0

fb[4]=hb[4]-hb[5];

fc[4]=hc[4]-hc[5];

fd[4]=hd[4]-hd[5];

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

cout<<"\n Persamaan 5\n";

cout<<"   *"<<fa[4]<<" a0 + "<<fb[4]<<" a1 + "<<fc[4]<<" a2 = "<<fd[4]<<endl;

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

//eliminasi pers. 4 dan 5

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

cout<<"\n Eliminasi Pers. 4 dan 5\n";

cout<<ha[3]<<" a0 + "<<hb[3]<<" a1 + "<<hc[3]<<" a2 = "<<hd[3]<<endl;

cout<<fa[4]<<" a0 + "<<fb[4]<<" a1 + "<<fc[4]<<" a2 = "<<fd[4]<<endl;

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

fb[5]=hb[3]*fb[4];

fc[5]=hc[3]*fb[4];

fd[5]=hd[5]*fb[4];

fb[6]=fb[4]*hb[3];

fc[6]=fc[4]*hb[3];

fd[6]=fd[4]*hb[3];

fb[7]=fb[5]-fb[6];

fc[7]=fc[5]-fc[6];

fd[7]=fd[5]-fd[6];

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

cout<<"\n Persamaan 6( HASIL)\n";

cout<<fa[7]<<" a0 + "<<fb[7]<<" a1 + "<<fc[7]<<" a2 = "<<fd[7]<<endl;

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

a2=fd[7]/fc[7];

cout<<"\n ----------> Nilai a2 = "<<a2<<endl;

cout<<"\n Masukkan nilai a2 ke pers.4\n";

 a1 = (hd[3]-(hc[3]*a2))/hb[3];

cout<<"\n ----------> Nilai a1 = "<<a1<<endl;

cout<<"\n Masukkan Nilai a1 dan a2 ke pers. 1\n";

a0 = (fd[1]- ((fb[1]*a1) + (fc[1]*a2)))/fa[1];

cout<<"\n ----------> Nilai a0 = "<<a0<<endl;

cout<<"\n\n Kemudian masukkan a0,a1,a2 ke Persemaan grais kurva ,yaitu\n";

cout<<"\n E(i)^2 = (y - a0 - a1xi - a2xi^2)\n";

cout<<"\n\n Jadi Persamaan kurva orde duanya adalah \n";

cout<<" y = "<<a0<<" - "<<a1<<" xi - "<<a2<<" xi^2"<<endl;

getch();main();

}

void SistemPersLinier(int q){

system("cls");

int n=q;

float A[3][3],B[3][3],L[3][3],U[3][3];

float y1=0,y2=0,y3=0,x1=0,x2=0,x3=0;

A[1][1]=3;A[1][2]=-1;A[1][3]=2;

A[2][1]=1;A[2][2]=2;A[2][3]=3;

A[3][1]=2;A[3][2]=-2;A[3][3]=-1;

/* ---   Metode Lu------*/

B[1][1]=12;B[1][2]=0;B[1][3]=0;

B[2][1]=11;B[2][2]=0;B[2][3]=0;

B[3][1]=2;B[3][2]=0;B[3][3]=B[1][2];

L[1][1]=A[1][1];

L[2][1]=A[2][1];

L[3][1]=A[3][1];

U[1][2]=A[1][2]/L[1][1];

U[1][3]=A[1][3]/L[1][1];

L[2][2]=A[2][2]-(L[2][1]*U[1][2]);

L[3][2]=A[3][2]-(L[3][1]*U[1][2]);

U[2][3]=(A[2][3]-(L[2][1]*U[1][3]))/L[2][2];

L[3][3]=A[3][3]-((L[3][1]*U[1][3])-(L[3][2]*U[2][3]));

L[1][2]=0;L[1][3]=0;L[2][3]=0;

U[1][1]=1;U[2][2]=1;U[3][3]=U[2][2];

U[2][1]=0;U[3][1]=0;U[3][2]=0;

cout<<"\n\n Matrik A : \n";

for (int i=1;i<=3;i++){

for(int j=1;j<=3;j++){

cout<<setiosflags(ios::right)<<setw(12)<<A[i][j];}

cout<<endl;}

cout<<"\n\n Matrik B : \n";

for (int i=1;i<=3;i++){

for(int j=1;j<=3;j++){

cout<<setiosflags(ios::right)<<setw(12)<<B[i][j];}

cout<<endl;}

cout<<"\n\n Matrik L : \n";

for (int i=1;i<=3;i++){

for(int j=1;j<=3;j++){

cout<<setiosflags(ios::right)<<setw(12)<<L[i][j];}

cout<<endl;}

cout<<"\n\n Matrik U : \n";

for (int i=1;i<=3;i++){

for(int j=1;j<=3;j++){

cout<<setiosflags(ios::right)<<setw(12)<<U[i][j];}

cout<<endl;}

cout<<"\n\n Sehingga Didapatkan :\n";

cout<<" "<<L[1][1]<<"y1 = "<<B[1][1];

cout<<"\n "<<L[2][1]<<"y1 + "<<L[2][2]<<" y2 = "<<B[2][1];

cout<<"\n "<<L[3][1]<<"y1 + "<<L[3][2]<<" y2 + "<<L[3][3]<<" y3 = "<<B[3][1]<<endl;

y1=B[1][1]/L[1][1];

y2=(B[2][1]-(L[2][1]*y1))/L[2][2];

y3=(B[3][1]-(L[3][1]*y1+L[3][2]*y2))/L[3][3];

cout<<"\n hasil : "<<L[3][3];

x3=y3;

x2=(y2-(U[2][3]*x3));

x1=y1-((U[1][2]*x2)+(U[1][3]*x3));

cout<<"\n Jadi Didatakan Nilai-nilainya :\n";

cout<<"\n x1 : "<<x1;

cout<<"\n x2 : "<<x2;

cout<<"\n x3 : "<<x3;

cout<<"\n y1 : "<<y1;

cout<<"\n y2 : "<<y2;

cout<<"\n y3 : "<<y3<<endl;

/*-------Metode Gaus Jordan------*/

getch();main();

}

 Hasil Compile