FCFhoq - Online C Compiler & Debugging Tool

#include <stdio.h>
#include <math.h>

float f(float x) {
    return 3*x - 14 + exp(x) - exp(-x);
}

float secant_method(float (*f)(float), float a, float b, float tol, int max_iter) {
    float x0 = a, x1 = b, x_new;
    for (int i = 0; i < max_iter; i++) {
        float f_x0 = f(x0);
        float f_x1 = f(x1);
        if (fabs(f_x1) < tol) return x1;
        x_new = x1 - f_x1 * (x1 - x0) / (f_x1 - f_x0);
        if (fabs(x_new - x1) < tol) return x_new;
        x0 = x1;
        x1 = x_new;
    }
    return x1;
}

int main() {
    float a = 1.0f, b = 3.0f, tol = 1e-6f;
    int max_iter = 100;
    float root = secant_method(f, a, b, tol, max_iter);
    printf("\nответ: %6.6f\n", root);
    return 0;
}