# Numerical Methods: Solution of non-linear equation by using Secant method in C

Source Code:

///solution of non linear equations using secant method
#include<stdio.h>
#include<math.h>
float f(float x){
return (pow(x,5) - 3*pow(x,3)-1);
}
int main(){
float a, b, c;
int count = 0;
printf("Enter the initial value of a: ");
scanf("%f", &a);
printf("Enter the initial value of b: ");
scanf("%f", &b);
while(1){
count++;
c = (a*f(b)-b*f(a))/(f(b)-f(a));
if(c==b){
break;
}
if(count>=20){
break;
}
a = b;
b = c;
}
printf("\nThe root after %d iteration is %.7f\n",count, c);
return 0;
}
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