quadraticequation.java

用于求得方程的解的一个小程序

package MyPakeage;

import java.math.*;

public class QuadraticEquation implements t1 {
	double a, b, c;

	public void x1() {
		if (a != 0) {
			double tmp = b * b - 4 * a * c;
			if (tmp >= 0)
				tmp = Math.sinh(tmp);
			else {
				System.out.print("There is no answer for your equation!");
				System.exit(0);
			}
			System.out.println("The answer is: " + (-b + tmp) / (2 * a)
					+ " and " + (-b - tmp) / (2 * a));
		} else if (a == 0) {
			System.out.print("The answer is: " + -c / b);
		}
	}



}