chazhi42.java

数值分析之计算方法与实验4：插值法 by java

class Chazhi42{
  static void L5(double x){
  double y=
((x-0.42)*(x-0.50)*(x-0.58)*(x-0.66)*(x-0.72)*1.04403)/((0.30-0.42)*(0.30-0.50)*(0.30-0.58)*(0.30-0.66)*(0.30-0.72))+
((x-0.30)*(x-0.50)*(x-0.58)*(x-0.66)*(x-0.72)*1.08462)/((0.42-0.30)*(0.42-0.50)*(0.42-0.58)*(0.42-0.66)*(0.42-0.72))+
((x-0.30)*(x-0.42)*(x-0.58)*(x-0.66)*(x-0.72)*1.11803)/((0.50-0.30)*(0.50-0.42)*(0.50-0.58)*(0.50-0.66)*(0.50-0.72))+ 
((x-0.30)*(x-0.42)*(x-0.50)*(x-0.66)*(x-0.72)*1.15603)/((0.58-0.30)*(0.58-0.42)*(0.58-0.50)*(0.58-0.66)*(0.58-0.72))+
((x-0.30)*(x-0.42)*(x-0.58)*(x-0.50)*(x-0.72)*1.19817)/((0.66-0.30)*(0.66-0.42)*(0.66-0.58)*(0.66-0.50)*(0.66-0.72))+
((x-0.30)*(x-0.42)*(x-0.58)*(x-0.66)*(x-0.50)*1.23223)/((0.72-0.30)*(0.72-0.42)*(0.72-0.58)*(0.72-0.66)*(0.72-0.50));    
     System.out.println(y);
   }  
  public static void main(String[]args){
     L5(0.46);
     L5(0.55);      
     L5(0.60);
  }
}