Tugas Metode Numerik

NAMA        : SAWITRI D KUSUMA WARDHANI

NBI             : 461003285

KELAS      : R

BISEKSI

#include

#include

#include

#include

void main(){

float x1,x2,x3,y1,y2,y3,er;

char ulang;

do{

clrscr();

do{

            er=0.1;

            cout<<"x1= "; cin>>x1;         

   y1=2*x1*x1+5*x1-9;

            cout<<"y1= "<

            cout<<"x2= "; cin>>x2;

            y2=2*x2*x2+5*x2-9;

            cout<<"y2= "<

} while(y1*y2>0);

do{

   x3=(x1+x2)/2;

   y3=2*x3*x3+5*x3-9;

   if(y1*y3<0)

     x2=x3;

   else

    x1=x3;

      cout<

   if (y3<0) y3=(-1)*y3;

} while ((y3)>=er);

cout<<" Hasil X="<

cout<<"Ulang? "; cin>>ulang;

} while(ulang==('y'));

getch();

}

TABULASI

#include

#include

#include

void main(){

float x1,x2,x3,y1,y2,xa,xb,xc,i,x,ya,yb,y,er;

char ulang;

er=0.01;

do{

clrscr;

do{

            cout<<"x1= "; cin>>x1;

            cout<<"x2= "; cin>>x2;

            y1=(x1*x1)-5*x1+6;

            y2=(x2*x2)-5*x2+6;

} while(y1*y2>0);

do{

if(x1>x2) {

            xa=x2;

   xb=x1;

   }

else {

            xa=x1;

   xb=x2;

   }

xc=(xb-xa)/10; i=10;

do{

i=i+1;

x=xa+xc*i;

ya=(x*x)-5*x+6;

x3=x-xc;

yb=(x3*x3)-5*x3+6;

} while(ya*yb<0);

x1=x;

x2=x-xc;

for(int j=1;j<=11;j++){

            x=xa+xc*(j-1);

   y=(x*x)-5*x+6;

}

cout<

cout<<"akar pendekatannya adalah x="<

cout<<"error ="<

} while ((abs(y))

cout<<"Ulang? "; cin>>ulang;

} while(ulang!='t');

getch();

}

REGULASI FASI

#include

#include

void main(){

float x1,x2,x3,y1,y2,y3,er;

char ulang;

do{

clrscr();

do{

            er=0.1;

            cout<<"x1= "; cin>>x1;

   y1=2*x1*x1+5*x1-9;

   cout<<"y1= "<

            cout<<"x2= "; cin>>x2;

            y2=2*x2*x2+5*x2-9;

            cout<<"y2= "<

} while(y1*y2>0);

do{

   x3=(x1*y2-y1*x2)/(y2-y1);

   y3=2*x3*x3+5*x3-9;

   if(y1*y3<0){

     x2=x3;

     y2=y3 ;

   }else {

    x1=x3;

    y1=y3;                    }

   cout<

   if (y3<0) y3=(-1)*y3;

} while ((y3)>=er);

cout<<" Hasil X="<

cout<<"Ulang? "; cin>>ulang;

} while(ulang==('y'));

getch();

}