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SECANT METHOD USING e(x)-3x

Posted By: Leah Hughes     Category: C Programming     Views: 4869

Write a program of SECANT METHOD USING e(x)-3x.

Code for SECANT METHOD USING e(x)-3x in C Programming

#include<stdio.h>
#include<conio.h>
#include<math.h>
#define epsil 0.00001

int p,c[10];

void appro();
voidfalse(float,float,float,float);

void main()
{
clrscr();
appro();
getch();
}

voidfalse(float x1,float x2,float fx1,float fx2)
{
float x3,fx3,temp;
int n=1;
printf("******************************************************************\n");
printf("\nIt   x1        fx1        x2         fx2        x3         fx3\n");
printf("******************************************************************\n");
         do
         {
         temp=x3;
         x3=(((x1*fx2)-(x2*fx1))/(fx2-fx1));
         fx3=(exp(x3)-(3*(x3)));
         x1=x2;
         fx1=fx2;
         x2=x3;
         fx2=fx3;
         printf("%d   %.4f    %.4f     %.4f    %.4f    %.4f     %.4f\n",n,x1,fx1,x2,fx2,x3,fx3);
         n=n+1;
         }while((fabs(temp-x3)>=epsil)&&(fx3!=0));
printf("\n\t\t********************\n");
printf("\n\t\tThe root is %.4f\n",x3);
printf("\t\t********************\n");
}

void appro()
{
float x1,x2,x3,fx1,fx2,fx3;
printf("\nPlease Enter first approximation: ");
scanf("%f",&x1);
printf("\nPlease Enter second approximation: ");
scanf("%f",&x2);
fx1=(exp(x1)-(3*(x1)));
fx2=(exp(x2)-(3*(x2)));
false(x1,x2,fx1,fx2);
}
  
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Leah Hughes
Leah Hughes author of SECANT METHOD USING e(x)-3x is from London, United Kingdom.
 
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