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我需要在 Java制定一项方案,解决一些整体问题。类似内容:

$“alt$

我期待着在java这样做。马蒂,但我没有发现任何东西。

是否有人想找到解决办法? (5月有一些额外的图书馆或类似的图书馆)。

Answer 1

Wikipedia关于新融合的文章有一节:。

在执行“猎物”或“变形”规则方面,你不应有任何问题。

Answer 2

,Apache Commons Math Library contained, in the Numerical Analysis section, 4 different number integrators:

Romberg s method
Simpson s method
trapezoid method
Legendre-Gauss method

Answer 3

查阅 Simpson s Rule on Wikipedia。

Answer 4

/*------------------------------------------------------------------------------------------------------
 * Small program that numerically calculates an integral according to 
 * Simpson s algorithm. Before executing it, you must enter:
 *  - the expression of the function f: line 12;
 *  - the lower and upper limits b of the integral: lines 39 and 40;
 *  - the number of measurements n (n is integer !!!): line 41.
 *------------------------------------------------------------------------------------------------------*/
// Class function: Defines Simpson s rule
class Function{                                                        

    // Define the function to integrate
    double f (double x) {                                              
       return Math.Cos(x);
    }

    // Simpson s method for integral calculus
    // a = lower bound
    // b = upper bound of integration
    // n = number of passes (higher = less margin of error, but takes longer)
    double IntSimpson(double a, double b,int n){                       
       int i,z;                                                       
       double h,s;                                                    

       n=n+n;
       s = f(a)*f(b);
       h = (b-a)/n;                                        
       z = 4;

       for(i = 1; i<n; i++){
          s = s + z * f(a+i*h);
          z = 6 - z;
       }
       return (s * h)/3;
    } 
}  


class integration{                                                    

    // Class result: calculates the integral and displays the result.
    public static void main(String args[]){
       // Call class function                                           
       Function function;                                   
       function = new Function();

       // ENTER the desired values of a, b and n !!!
       double a = ???? ;                                           
       double b = ???? ;
       int n = ???? ;
       // Applies simpson method to function
       double result = function.IntSimpson(a,b,n);

       // Show results
       System.out.println("Integral is: " + result);        
    }
}

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