/**
*
*/
package com.xmlparse.test1;
/**
* @author Administrator
* @date 日期:2012-4-20 时间:下午09:13:42
* 功能:
*/
public class CarTest {
public static void main(String args[]){
double d1 = 4;
double d2 = 33;
double d3 = 0;
double d4 = 33;
double k1 = 4;
double k2 = 33;
double k3 = 0;
double k4 = 33;
double c = Math.pow(16,0.5);
System.out.println(c);
double result;
result = (d1*k1+d2*k2+d3*k3+d4*k4)/Math.pow((Math.pow(d1, 2)+Math.pow(d2, 2)+Math.pow(d3, 2)+Math.pow(d4, 2))*((Math.pow(k1, 2)+Math.pow(k2, 2)+Math.pow(k3, 2)+Math.pow(k4, 2))),0.5);
System.out.println("result:"+result);
}
}