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# PROGRAM FOR SECANT METHOD OF PARTICULAR EQUATION IS log(x)-cos(x)

Posted By: Adel Fischer     Category: C Programming     Views: 7767

## Code for PROGRAM FOR SECANT METHOD OF PARTICULAR EQUATION IS log(x)-cos(x) in C Programming

```#include<conio.h>
#include<stdio.h>
#include<stdlib.h>
#include<math.h>
#define e 0.0001

int i=0,cnt=0,flag=0;
float x1,x2,x3=0,t=0;
float fx1=0,fx2=0,fx3=0,temp=0;

float func(float f)
{
return(log10(f)-cos(f));
}

int check()
{
printf("\n\n\tINTIAL X1---->");
scanf("%f",&x1);

printf("\n\tINTIAL X2---->");
scanf("%f",&x2);

fx1=fx2=fx3=0.0;

if( ((func(x1)*func(x2)))>0)
{
printf("\n\t INTIAL VALUES ARE NOT PERFECT.");
return(1);
}
return(0);
}

void main()
{
clrscr();
printf("\n\n\t\t PROGRAM FOR SECANT METHOD");

printf("\n\t PARTICULAR EQUATION IS ::: log(x)-cos(x)");

while(1)
{
if(check()==0)
{
flag=1;
break;
}
check();
}

printf("\n ******************************************************");
printf("\n ITERATION    X1    FX1    X2    FX2     X3       FX3   ");
printf("\n **********************************************************");

if(flag==1)
{
do
{
cnt++;
fx1=fx2=fx3=0;
fx1=func(x1);
fx2=func(x2);
x3=((x1*fx2)-(x2*fx1))/(fx2-fx1);
fx3=func(x3);

printf("\n %d     %.4f  %.4f  %.4f  %.4f  %.4f  %.4f",cnt,x1,fx1,x2,fx2,x3,fx3);
x1=x2;
x2=x3;
getch();
}while(fabs(x2 - x1)>=e);
printf("\n\t ROOT OF EQUATION IS  %f",x3);
}
getch();
}

/*******************************OUTPUT************************************         PROGRAM FOR SECANT METHOD     PARTICULAR EQUATION IS ::: log(x)-cos(x)    INTIAL X1---->1.4    INTIAL X2---->1.45 ****************************************************** ITERATION    X1    FX1    X2    FX2     X3       FX3 ****************************************************** 1     1.4000  -0.0238  1.4500  0.0409  1.4184  0.0000 2     1.4500   0.0409  1.4184  0.0000  1.4184  0.0000 ******************************************************     ROOT OF EQUATION IS  1.418406                           **/```
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 Adel Fischer author of PROGRAM FOR SECANT METHOD OF PARTICULAR EQUATION IS log(x)-cos(x) is from Frankfurt, Germany. View All Articles

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