gay.java

package com.company;

import java.util.function.Function;

/**
 * Created by ilya2 on 02.03.2017.
 */
public class Meh {
    public static void main(String[] args) {
        new Meh().run();
    }

    double alpha = 10.0;
    double lambda = 380.0;
    double H = 0.003;

    Function<Double, Double> f = pm -> pm * Math.sin(pm * H) - alpha/lambda * Math.cos(pm * H);
    Function<Double, Double> fst = pm -> H * pm * Math.cos(pm * H) + (H * alpha * Math.sin (pm * H))/(lambda);
    public void run(){
        double eps = 0.00001;
        double x = 1.2;
        for (int i = 0; i< 5; i++) {

            double xn = -10000;
            double xn1 = x;
            while (Math.abs(xn - xn1) >= eps) {
                xn = xn1;
                xn1 = xn - f.apply(xn) / fst.apply(xn);
            }
            System.out.println(xn);
            x+=Math.PI/H;
        }
    }
}